// www.pordus.com pordus viewer 1.0
var pordusnviewer={
enableTitle: true,
enableAnimation: true,
definefooter: '<div class="footerbar">Kapat</div>',
defineLoading: '<img src="img/loading.gif">',
scrollbarwidth: 16,
opacitystring: 'filter:progid:DXImageTransform.Microsoft.alpha(opacity=10); -moz-opacity: 0.1; opacity: 0.1',
targetlinks:[],
createpdBox:function(){
document.write('<div id="pdBox" onClick="pordusnviewer.closeit()"><div id="pdImage"></div>'+this.definefooter+'</div>')
document.write('<div id="pdLoading">'+this.defineLoading+'</div>')
this.pdBox=document.getElementById("pdBox")
this.pdImage=document.getElementById("pdImage")
this.pdLoading=document.getElementById("pdLoading")
this.standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body
},
centerDiv:function(divobj){
var ie=document.all && !window.opera
var dom=document.getElementById
var scroll_top=(ie)? this.standardbody.scrollTop : window.pageYOffset
var scroll_left=(ie)? this.standardbody.scrollLeft : window.pageXOffset
var docwidth=(ie)? this.standardbody.clientWidth : window.innerWidth-this.scrollbarwidth
var docheight=(ie)? this.standardbody.clientHeight: window.innerHeight
var docheightcomplete=(this.standardbody.offsetHeight>this.standardbody.scrollHeight)? this.standardbody.offsetHeight : this.standardbody.scrollHeight
var objwidth=divobj.offsetWidth
var objheight=divobj.offsetHeight
var topposition=(docheight>objheight)? scroll_top+docheight/2-objheight/2+"px" : scroll_top+10+"px"
divobj.style.left=docwidth/2-objwidth/2+"px"
divobj.style.top=Math.floor(parseInt(topposition))+"px"
divobj.style.visibility="visible"
},
showpdBox:function(){
this.centerDiv(this.pdBox)
if (this.enableAnimation){
this.currentopacity=0.1
this.opacitytimer=setInterval("pordusnviewer.opacityanimation()", 20)
}
},
loadimage:function(link){
if (this.pdBox.style.visibility=="visible")
this.closeit() 
var imageHTML='<img src="'+link.getAttribute("href")+'" style="'+this.opacitystring+'" />'
if (this.enableTitle && link.getAttribute("title"))
imageHTML+='<br />'+link.getAttribute("title")
this.centerDiv(this.pdLoading)
this.pdImage.innerHTML=imageHTML
this.featureImage=this.pdImage.getElementsByTagName("img")[0]
this.featureImage.onload=function(){
pordusnviewer.pdLoading.style.visibility="hidden"
pordusnviewer.showpdBox()
}
if (document.all && !window.createPopup)
this.featureImage.src=link.getAttribute("href")
this.featureImage.onerror=function(){
pordusnviewer.pdLoading.style.visibility="hidden"
}
},
setimgopacity:function(value){
var targetobject=this.featureImage
if (targetobject.filters && targetobject.filters[0]){
if (typeof targetobject.filters[0].opacity=="number")
targetobject.filters[0].opacity=value*100
else
targetobject.style.filter="alpha(opacity="+value*100+")"
}
else if (typeof targetobject.style.MozOpacity!="undefined")
targetobject.style.MozOpacity=value
else if (typeof targetobject.style.opacity!="undefined")
targetobject.style.opacity=value
else
this.stopanimation()
},
opacityanimation:function(){
this.setimgopacity(this.currentopacity)
this.currentopacity+=0.1
if (this.currentopacity>1)
this.stopanimation()
},
stopanimation:function(){
if (typeof this.opacitytimer!="undefined")
clearInterval(this.opacitytimer)
},
closeit:function(){
this.stopanimation()
this.pdBox.style.visibility="hidden"
this.pdImage.innerHTML=""
this.pdBox.style.left="-2000px"
this.pdBox.style.top="-2000px"
},

cleanup:function(){
this.pdLoading=null
if (this.featureImage) this.featureImage.onload=null
this.featureImage=null
this.pdImage=null
for (var i=0; i<this.targetlinks.length; i++)
this.targetlinks[i].onclick=null
this.pdBox=null
},

dotask:function(target, functionref, tasktype){
var tasktype=(window.addEventListener)? tasktype : "on"+tasktype
if (target.addEventListener)
target.addEventListener(tasktype, functionref, false)
else if (target.attachEvent)
target.attachEvent(tasktype, functionref)
},

init:function(){
if (!this.enableAnimation)
this.opacitystring=""
var pagelinks=document.getElementsByTagName("a")
for (var i=0; i<pagelinks.length; i++){
if (pagelinks[i].getAttribute("rel") && pagelinks[i].getAttribute("rel")=="pordusn"){
pagelinks[i].onclick=function(){
pordusnviewer.stopanimation()
pordusnviewer.loadimage(this)
return false
}
this.targetlinks[this.targetlinks.length]=pagelinks[i]
}
}
this.dotask(window, function(){if (pordusnviewer.pdBox.style.visibility=="visible") pordusnviewer.centerDiv(pordusnviewer.pdBox)}, "resize")
}
}
pordusnviewer.createpdBox()
pordusnviewer.dotask(window, function(){pordusnviewer.init()}, "load")
pordusnviewer.dotask(window, function(){pordusnviewer.cleanup()}, "unload")