// -------------------------------------------------------------------

// DHTML Window Widget- By Dynamic Drive, available at: http://www.dynamicdrive.com

// v1.0: Script created Feb 15th, 07'

// v1.01: Feb 21th, 07' (see changelog.txt)

// v1.02: March 26th, 07' (see changelog.txt)

// v1.03: May 5th, 07' (see changelog.txt)

// -------------------------------------------------------------------



var dhtmlwindow={

imagefiles:['img/min.gif', 'img/close.gif', 'img/restore.gif', 'img/resize.gif'], //Path to 4 images used by script, in that order

ajaxbustcache: true, //Bust caching when fetching a file via Ajax?



minimizeorder: 0,

tobjects: [], //object to contain references to dhtml window divs, for cleanup purposes



init:function(t){

        var domwindow=document.createElement("div") //create dhtml window div

        domwindow.id=t

        domwindow.className="dhtmlwindow"

        var domwindowdata=''

        domwindowdata='<div class="drag-handle">'

        domwindowdata+='DHTML Window <div class="drag-controls"><img src="'+this.imagefiles[0]+'" title="Minimize" /><img src="'+this.imagefiles[1]+'" title="Close" /></div>'

        domwindowdata+='</div>'

        domwindowdata+='<div class="drag-contentarea"></div>'

        domwindowdata+='<div class="drag-statusarea"><div class="drag-resizearea" style="background: transparent url('+this.imagefiles[3]+') top right no-repeat;">&nbsp;</div></div>'

        domwindowdata+='</div>'

        domwindow.innerHTML=domwindowdata

        document.getElementById("dhtmlwindowholder").appendChild(domwindow)

        this.zIndexvalue=(this.zIndexvalue)? this.zIndexvalue+1 : 100 //z-index value for DHTML window: starts at 0, increments whenever a window has focus

        var t=document.getElementById(t)

        var divs=t.getElementsByTagName("div")

        for (var i=0; i<divs.length; i++){ //go through divs inside dhtml window and extract all those with class="drag-" prefix

                if (/drag-/.test(divs[i].className))

                        t[divs[i].className.replace(/drag-/, "")]=divs[i] //take out the "drag-" prefix for shorter access by name

        }

        t.style.zIndex=this.zIndexvalue //set z-index of this dhtml window

        t.handle._parent=t //store back reference to dhtml window

        t.resizearea._parent=t //same

        t.controls._parent=t //same

        t.onclose=function(){return true} //custom event handler "onclose"

        t.onmousedown=function(){dhtmlwindow.zIndexvalue++; this.style.zIndex=dhtmlwindow.zIndexvalue} //Increase z-index of window when focus is on it

        t.handle.onmousedown=dhtmlwindow.setupdrag //set up drag behavior when mouse down on handle div

        t.resizearea.onmousedown=dhtmlwindow.setupdrag //set up drag behavior when mouse down on resize div

        t.controls.onclick=dhtmlwindow.enablecontrols

        t.show=function(){dhtmlwindow.show(this)} //public function for showing dhtml window

        t.hide=function(){dhtmlwindow.close(this)} //public function for hiding dhtml window

        t.setSize=function(w, h){dhtmlwindow.setSize(this, w, h)} //public function for setting window dimensions

        t.moveTo=function(x, y){dhtmlwindow.moveTo(this, x, y)} //public function for moving dhtml window (relative to viewpoint)

        t.isResize=function(bol){dhtmlwindow.isResize(this, bol)} //public function for specifying if window is resizable

        t.isScrolling=function(bol){dhtmlwindow.isScrolling(this, bol)} //public function for specifying if window content contains scrollbars

        t.load=function(contenttype, contentsource, title){dhtmlwindow.load(this, contenttype, contentsource, title)} //public function for loading content into window

        this.tobjects[this.tobjects.length]=t

        return t //return reference to dhtml window div

},



open:function(t, contenttype, contentsource, title, attr, recalonload){

        var d=dhtmlwindow //reference dhtml window object

        function getValue(Name){

                var config=new RegExp(Name+"=([^,]+)", "i") //get name/value config pair (ie: width=400px,)

                return (config.test(attr))? parseInt(RegExp.$1) : 0 //return value portion (int), or 0 (false) if none found

        }

        if (document.getElementById(t)==null) //if window doesn't exist yet, create it

                t=this.init(t) //return reference to dhtml window div

        else

                t=document.getElementById(t)

        t.setSize(getValue(("width")), (getValue("height"))) //Set dimensions of window

        var xpos=getValue("center")? "middle" : getValue("left") //Get x coord of window

        var ypos=getValue("center")? "middle" : getValue("top") //Get y coord of window

        //t.moveTo(xpos, ypos) //Position window

        if (typeof recalonload!="undefined" && recalonload=="recal" && this.scroll_top==0){ //reposition window when page fully loads with updated window viewpoints?

                if (window.attachEvent && !window.opera) //In IE, add another 400 milisecs on page load (viewpoint properties may return 0 b4 then)

                        this.addEvent(window, function(){setTimeout(function(){t.moveTo(xpos, ypos)}, 400)}, "load")

                else

                        this.addEvent(window, function(){t.moveTo(xpos, ypos)}, "load")

        }

        t.isResize(getValue("resize")) //Set whether window is resizable

        t.isScrolling(getValue("scrolling")) //Set whether window should contain scrollbars

        t.style.visibility="visible"

        t.style.display="block"

        t.contentarea.style.display="block"

        t.moveTo(xpos, ypos) //Position window

        t.load(contenttype, contentsource, title)

        if (t.state=="minimized" && t.controls.firstChild.title=="Restore"){ //If window exists and is currently minimized?

                t.controls.firstChild.setAttribute("src", dhtmlwindow.imagefiles[0]) //Change "restore" icon within window interface to "minimize" icon

                t.controls.firstChild.setAttribute("title", "Minimize")

                t.state="fullview" //indicate the state of the window as being "fullview"

        }

        return t

},



setSize:function(t, w, h){ //set window size (min is 150px wide by 100px tall)

        t.style.width=Math.max(parseInt(w), 150)+"px"

        t.contentarea.style.height=Math.max(parseInt(h), 100)+"px"

},



moveTo:function(t, x, y){ //move window. Position includes current viewpoint of document

        this.getviewpoint() //Get current viewpoint numbers

        t.style.left=(x=="middle")? this.scroll_left+(this.docwidth-t.offsetWidth)/2+"px" : this.scroll_left+parseInt(x)+"px"

        t.style.top=(y=="middle")? this.scroll_top+(this.docheight-t.offsetHeight)/2+"px" : this.scroll_top+parseInt(y)+"px"

},



isResize:function(t, bol){ //show or hide resize inteface (part of the status bar)

        t.statusarea.style.display=(bol)? "block" : "none"

        t.resizeBool=(bol)? 1 : 0

},



isScrolling:function(t, bol){ //set whether loaded content contains scrollbars

        t.contentarea.style.overflow=(bol)? "auto" : "hidden"

},



load:function(t, contenttype, contentsource, title){ //loads content into window plus set its title (3 content types: "inline", "iframe", or "ajax")

        var contenttype=contenttype.toLowerCase() //convert string to lower case

        if (typeof title!="undefined")

                t.handle.firstChild.nodeValue=title

        if (contenttype=="inline")

                t.contentarea.innerHTML=contentsource

        else if (contenttype=="div"){

                t.contentarea.innerHTML=document.getElementById(contentsource).innerHTML //Populate window with contents of specified div on page

                document.getElementById(contentsource).style.display="none" //hide that div

        }

        else if (contenttype=="iframe"){

                t.contentarea.style.overflow="hidden" //disable window scrollbars, as iframe already contains scrollbars

                if (!t.contentarea.firstChild || t.contentarea.firstChild.tagName!="IFRAME") //If iframe tag doesn't exist already, create it first

                        t.contentarea.innerHTML='<iframe src="" style="margin:0; padding:0; width:100%; height: 100%" name="_iframe-'+t.id+'"></iframe>'

                window.frames["_iframe-"+t.id].location.replace(contentsource) //set location of iframe window to specified URL

                }

        else if (contenttype=="ajax"){

                this.ajax_connect(contentsource, t) //populate window with external contents fetched via Ajax

        }

        t.contentarea.datatype=contenttype //store contenttype of current window for future reference

},



setupdrag:function(e){

        var d=dhtmlwindow //reference dhtml window object

        var t=this._parent //reference dhtml window div

        d.etarget=this //remember div mouse is currently held down on ("handle" or "resize" div)

        var e=window.event || e

        d.initmousex=e.clientX //store x position of mouse onmousedown

        d.initmousey=e.clientY

        d.initx=parseInt(t.offsetLeft) //store offset x of window div onmousedown

        d.inity=parseInt(t.offsetTop)

        d.width=parseInt(t.offsetWidth) //store width of window div

        d.contentheight=parseInt(t.contentarea.offsetHeight) //store height of window div's content div

        if (t.contentarea.datatype=="iframe"){ //if content of this window div is "iframe"

                t.style.backgroundColor="#F8F8F8" //colorize and hide content div (while window is being dragged)

                t.contentarea.style.visibility="hidden"

        }

        document.onmousemove=d.getdistance //get distance travelled by mouse as it moves

        document.onmouseup=function(){

                if (t.contentarea.datatype=="iframe"){ //restore color and visibility of content div onmouseup

                        t.contentarea.style.backgroundColor="white"

                        t.contentarea.style.visibility="visible"

                }

                d.stop()

        }

        return false

},



getdistance:function(e){

        var d=dhtmlwindow

        var etarget=d.etarget

        var e=window.event || e

        d.distancex=e.clientX-d.initmousex //horizontal distance travelled relative to starting point

        d.distancey=e.clientY-d.initmousey

        if (etarget.className=="drag-handle") //if target element is "handle" div

                d.move(etarget._parent, e)

        else if (etarget.className=="drag-resizearea") //if target element is "resize" div

                d.resize(etarget._parent, e)

        return false //cancel default dragging behavior

},



getviewpoint:function(){ //get window viewpoint numbers

        var ie=document.all && !window.opera

        var domclientWidth=document.documentElement && parseInt(document.documentElement.clientWidth) || 100000 //Preliminary doc width in non IE browsers

        this.standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body //create reference to common "body" across doctypes

        this.scroll_top=(ie)? this.standardbody.scrollTop : window.pageYOffset

        this.scroll_left=(ie)? this.standardbody.scrollLeft : window.pageXOffset

        this.docwidth=(ie)? this.standardbody.clientWidth : (/Safari/i.test(navigator.userAgent))? window.innerWidth : Math.min(domclientWidth, window.innerWidth-16)

        this.docheight=(ie)? this.standardbody.clientHeight: window.innerHeight

},



rememberattrs:function(t){ //remember certain attributes of the window when it's minimized or closed, such as dimensions, position on page

        this.getviewpoint() //Get current window viewpoint numbers

        t.lastx=parseInt((t.style.left || t.offsetLeft))-dhtmlwindow.scroll_left //store last known x coord of window just before minimizing

        t.lasty=parseInt((t.style.top || t.offsetTop))-dhtmlwindow.scroll_top

        t.lastwidth=parseInt(t.style.width) //store last known width of window just before minimizing/ closing

},



move:function(t, e){

        t.style.left=dhtmlwindow.distancex+dhtmlwindow.initx+"px"

        t.style.top=dhtmlwindow.distancey+dhtmlwindow.inity+"px"

},



resize:function(t, e){

        t.style.width=Math.max(dhtmlwindow.width+dhtmlwindow.distancex, 150)+"px"

        t.contentarea.style.height=Math.max(dhtmlwindow.contentheight+dhtmlwindow.distancey, 100)+"px"

},



enablecontrols:function(e){

        var d=dhtmlwindow

        var sourceobj=window.event? window.event.srcElement : e.target //Get element within "handle" div mouse is currently on (the controls)

        if (/Minimize/i.test(sourceobj.getAttribute("title"))) //if this is the "minimize" control

                d.minimize(sourceobj, this._parent)

        else if (/Restore/i.test(sourceobj.getAttribute("title"))) //if this is the "restore" control

                d.restore(sourceobj, this._parent)

        else if (/Close/i.test(sourceobj.getAttribute("title"))) //if this is the "close" control

                d.close(this._parent)

        return false

},



minimize:function(button, t){

        dhtmlwindow.rememberattrs(t)

        button.setAttribute("src", dhtmlwindow.imagefiles[2])

        button.setAttribute("title", "Restore")

        t.state="minimized" //indicate the state of the window as being "minimized"

        t.contentarea.style.display="none"

        t.statusarea.style.display="none"

        if (typeof t.minimizeorder=="undefined"){ //stack order of minmized window on screen relative to any other minimized windows

                dhtmlwindow.minimizeorder++ //increment order

                t.minimizeorder=dhtmlwindow.minimizeorder

        }

        t.style.left="10px" //left coord of minmized window

        t.style.width="200px"

        var windowspacing=t.minimizeorder*10 //spacing (gap) between each minmized window(s)

        t.style.top=dhtmlwindow.scroll_top+dhtmlwindow.docheight-(t.handle.offsetHeight*t.minimizeorder)-windowspacing+"px"

},



restore:function(button, t){

        dhtmlwindow.getviewpoint()

        button.setAttribute("src", dhtmlwindow.imagefiles[0])

        button.setAttribute("title", "Minimize")

        t.state="fullview" //indicate the state of the window as being "fullview"

        t.style.display="block"

        t.contentarea.style.display="block"

        if (t.resizeBool) //if this window is resizable, enable the resize icon

                t.statusarea.style.display="block"

        t.style.left=parseInt(t.lastx)+dhtmlwindow.scroll_left+"px" //position window to last known x coord just before minimizing

        t.style.top=parseInt(t.lasty)+dhtmlwindow.scroll_top+"px"

        t.style.width=parseInt(t.lastwidth)+"px"

},





close:function(t){

        try{

                var closewinbol=t.onclose()

        }

        catch(err){ //In non IE browsers, all errors are caught, so just run the below

                var closewinbol=true

 }

        finally{ //In IE, not all errors are caught, so check if variable isn't defined in IE in those cases

                if (typeof closewinbol=="undefined"){

                        alert("An error has occured somwhere inside your \"onclose\" event handler")

                        var closewinbol=true

                }

        }

        if (closewinbol){ //if custom event handler function returns true

                if (t.state!="minimized") //if this window isn't currently minimized

                        dhtmlwindow.rememberattrs(t) //remember window's dimensions/position on the page before closing

                t.style.display="none"

        }

        return closewinbol

},



show:function(t){

        if (t.lastx) //If there exists previously stored information such as last x position on window attributes (meaning it's been minimized or closed)

                dhtmlwindow.restore(t.controls.firstChild, t) //restore the window using that info

        else

                t.style.display="block"

        t.state="fullview" //indicate the state of the window as being "fullview"

},



ajax_connect:function(url, t){

        var page_request = false

        var bustcacheparameter=""

        if (window.XMLHttpRequest) // if Mozilla, IE7, Safari etc

                page_request = new XMLHttpRequest()

        else if (window.ActiveXObject){ // if IE6 or below

                try {

                page_request = new ActiveXObject("Msxml2.XMLHTTP")

                }

                catch (e){

                        try{

                        page_request = new ActiveXObject("Microsoft.XMLHTTP")

                        }

                        catch (e){}

                }

        }

        else

                return false

        page_request.onreadystatechange=function(){dhtmlwindow.ajax_loadpage(page_request, t)}

        if (this.ajaxbustcache) //if bust caching of external page

                bustcacheparameter=(url.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime()

        page_request.open('GET', url+bustcacheparameter, true)

        page_request.send(null)

},



ajax_loadpage:function(page_request, t){

        if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1)){

        t.contentarea.innerHTML=page_request.responseText

        }

},





stop:function(){

        dhtmlwindow.etarget=null //clean up

        document.onmousemove=null

        document.onmouseup=null

},



addEvent:function(target, functionref, tasktype){ //assign a function to execute to an event handler (ie: onunload)

        var tasktype=(window.addEventListener)? tasktype : "on"+tasktype

        if (target.addEventListener)

                target.addEventListener(tasktype, functionref, false)

        else if (target.attachEvent)

                target.attachEvent(tasktype, functionref)

},



cleanup:function(){

        for (var i=0; i<dhtmlwindow.tobjects.length; i++){

                dhtmlwindow.tobjects[i].handle._parent=dhtmlwindow.tobjects[i].resizearea._parent=dhtmlwindow.tobjects[i].controls._parent=null

        }

        window.onload=null

}



} //End dhtmlwindow object



document.write('<div id="dhtmlwindowholder"><span style="display:none">.</span></div>') //container that holds all dhtml window divs on page

window.onunload=dhtmlwindow.cleanup