// -------------------------------------------------------------------
// Flash thumbnail script by Nacho [eXr] at: nacho.exr (gmail)
// Date: Mar 21th, 2007
// based in
//  Image Thumbnail Viewer Script- By Dynamic Drive, available at: http://www.dynamicdrive.com
//  Last updated: Jan 22nd, 2007
// -------------------------------------------------------------------

var thumbnailviewer={
enableTitle: false, //Should "title" attribute of link be used as description?
enableAnimation: false, //Enable fading animation?
defineFooter: '<img src="imx/cerrar.gif" alt="cerrar X" title="cerrar X" />', //Define HTML for footer interface
defineLoading: '<img src="imx/loading.gif" /> Cargando banner...', //Define HTML for "loading" div

/////////////No need to edit beyond here/////////////////////////

scrollbarwidth: 16,
opacitystring: 'filter:progid:DXImageTransform.Microsoft.alpha(opacity=10); -moz-opacity: 0.1; opacity: 0.1',
targetlinks:[], //Array to hold links with rel="thumbnail"

createthumbBox:function(){
    //write out HTML for Image Thumbnail Viewer plus loading div
    document.write('<div id="overlay"></div>')
    document.write('<div id="thumbBox" onClick="thumbnailviewer.closeit()"><div id="thumbFooter" class="footerbar">'+this.defineFooter+'</div><div id="thumbImage"></div></div>')
    document.write('<div id="thumbLoading">'+this.defineLoading+'</div>')
    this.thumbBox=document.getElementById("thumbBox")
    this.thumbImage=document.getElementById("thumbImage") //Reference div that holds the shown image
    this.thumbLoading=document.getElementById("thumbLoading") //Reference "loading" div that will be shown while image is fetched
    this.thumbFooter=document.getElementById("thumbFooter")
    this.overlay=document.getElementById("overlay")
    this.standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body //create reference to common "body" across doctypes
},

centerDiv:function(divobj){ //Centers a div element on the page
    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 //Full scroll height of document
    var objwidth=divobj.offsetWidth //width of div element
    var objheight=divobj.offsetHeight //height of div element
    var topposition=(docheight>objheight)? scroll_top+docheight/2-objheight/2-30+"px" : scroll_top+20+"px" //Vertical position of div element: Either centered, or if element height larger than viewpoint height, 20px from top of viewpoint
    divobj.style.left=docwidth/2-objwidth/2+"px" //Center div element horizontally
    divobj.style.top=Math.floor(parseInt(topposition))+"px"
    divobj.style.visibility="visible"
},

putOverlay:function(over,dispmode){ //Centers a div element on the page
    if (dispmode=='visible'){
        var ie=document.all && !window.opera
        var docwidth=(ie)? this.standardbody.clientWidth : window.innerWidth-this.scrollbarwidth
        var docheightcomplete=(this.standardbody.offsetHeight>this.standardbody.scrollHeight)? this.standardbody.offsetHeight : this.standardbody.scrollHeight
        over.style.height=docheightcomplete+'px'
        over.style.width=docwidth+'px'
    } else {
        over.style.height=0
        over.style.width=0
    }
    //over.style.display=dispmode
    over.style.visibility=dispmode
},

showthumbBox:function(){ //Show ThumbBox div
    this.putOverlay(this.overlay,'visible')
    this.centerDiv(this.thumbBox)
    if (this.enableAnimation){ //If fading animation enabled
        this.currentopacity=0.1 //Starting opacity value
        this.opacitytimer=setInterval("thumbnailviewer.opacityanimation(0.9,thumbnailviewer.overlay)", 20)
    }
},


loadimage:function(link){ ///Load image function that gets attached to each link on the page with rel="thumbnail"
    if (this.thumbBox.style.visibility=="visible") ///if thumbox is visible on the page already
        this.closeit() ///Hide it first (not doing so causes triggers some positioning bug in Firefox

    ///extension
    var srcExtension=link.getAttribute("href").split(".")
    srcExtension=srcExtension[srcExtension.length-1]
    ///enlace
    var srcFlash=link.getAttribute("href").split('.'+srcExtension)
    srcFlash=srcFlash[0]
    ///dimensiones
    var dimFlash=srcFlash.split("-")
    dimFlash=dimFlash[1].split("x")
    var anchoFlash=dimFlash[0]
    var altoFlash=dimFlash[1]
    var imageHTML='<!--[if !IE]> --><object type="application/x-shockwave-flash" data="'+srcFlash+'.swf?clickTag=\"\"" width="'+anchoFlash+'" height="'+altoFlash+'"><!-- <![endif]--><!--[if IE]><object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0" width="'+anchoFlash+'" height="'+altoFlash+'"><param name="movie" value="'+srcFlash+'.swf" /><!--><!----><param name="loop" value="true" /><param name="menu" value="false" />'

    this.centerDiv(this.thumbLoading) //Center and display "loading" div while we set up the image to be shown
    this.thumbImage.innerHTML=imageHTML //Populate thumbImage div with shown image's HTML (while still hidden)

    var footerHTML=''
    if (this.enableTitle && link.getElementsByTagName("img")[0].getAttribute("alt")) //Use title attr of the link as description?
        footerHTML+='<span>'+link.getElementsByTagName("img")[0].getAttribute("alt")+'</span>'
    footerHTML+='<img src="imx/cerrar.gif" alt="cerrar X" title="cerrar X" />'
    this.thumbFooter.innerHTML=footerHTML

    this.featureImage=this.thumbImage.getElementsByTagName("object")[0]
    //this.onload=function(){ //When target flash has completely preloaded
        thumbnailviewer.thumbLoading.style.visibility="hidden" //Hide "loading" div
        thumbnailviewer.showthumbBox() //Display "thumbbox" div to the world!
    //}
    if (document.all && !window.createPopup) //Target IE5.0 browsers only. Address IE image cache not firing onload bug: panoramio.com/blog/onload-event/
        this.featureImage.data=srcFlash+'.swf?clickTag=\"\"'
        //this.featureImage.src=link.getAttribute("href")
    this.featureImage.onerror=function(){ //If an error has occurred while loading the image to show
        thumbnailviewer.thumbLoading.style.visibility="hidden" //Hide "loading" div, game over
    }
},

setimgopacity:function(value,targetobject){ //Sets the opacity of the object with the value setting (0,0 .. 1,0)
    if (targetobject.filters && targetobject.filters[0]){ //IE syntax
        if (typeof targetobject.filters[0].opacity=="number") //IE6
            targetobject.filters[0].opacity=value*100
        else //IE 5.5
            targetobject.style.filter="alpha(opacity="+value*100+")"
    }
    else if (typeof targetobject.style.MozOpacity!="undefined") //Old Mozilla syntax
        targetobject.style.MozOpacity=value
    else if (typeof targetobject.style.opacity!="undefined") //Standard opacity syntax
        targetobject.style.opacity=value
    else //Non of the above, stop opacity animation
        this.stopanimation(this.opacitytimer)
},

opacityanimation:function(max,divobj){ //Gradually increase opacity function
    //this.setimgopacity(this.currentopacity,this.featureImage)
    this.setimgopacity(this.currentopacity,divobj)
    this.currentopacity+=0.1
    if (this.currentopacity>max)
        this.stopanimation(this.opacitytimer)
},

stopanimation:function(timer){
    if (typeof timer!="undefined")
        clearInterval(timer)
},


closeit:function(){ //Close "thumbbox" div function
    this.stopanimation(this.opacitytimer)
    this.thumbBox.style.visibility="hidden"
    this.thumbImage.innerHTML=""
    this.thumbBox.style.left="-2000px"
    this.thumbBox.style.top="-2000px"
    this.putOverlay(this.overlay,'hidden')
},

cleanup:function(){ //Clean up routine on page unload
    this.thumbLoading=null
    if (this.featureImage) this.featureImage.onload=null
        this.featureImage=null
    this.thumbImage=null
    for (var i=0; i<this.targetlinks.length; i++)
        this.targetlinks[i].onclick=null
    this.thumbBox=null
},

dotask: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)
},

init:function(){ //Initialize thumbnail viewer script by scanning page and attaching appropriate function to links with rel="thumbnail"
    if (!this.enableAnimation)
        this.opacitystring=""
    var pagelinks=document.getElementsByTagName("a")
    for (var i=0; i<pagelinks.length; i++){ //BEGIN FOR LOOP
        if (pagelinks[i].getAttribute("rel") && pagelinks[i].getAttribute("rel")=="thumbnail"){ //Begin if statement
            pagelinks[i].onclick=function(){
                thumbnailviewer.stopanimation(thumbnailviewer.opacitytimer) //Stop any currently running fade animation on "thumbbox" div before proceeding
                thumbnailviewer.loadimage(this) //Load image
                return false
            }
            this.targetlinks[this.targetlinks.length]=pagelinks[i] //store reference to target link
        } //end if statement
    } //END FOR LOOP
    this.putOverlay(this.overlay,'hidden')
    //Reposition "thumbbox" div when page is resized
    this.dotask(window, function(){if (thumbnailviewer.thumbBox.style.visibility=="visible") thumbnailviewer.centerDiv(thumbnailviewer.thumbBox)}, "resize")
    //Resize overlay on resize
    this.dotask(window, function(){if (thumbnailviewer.overlay.style.display=="visible") thumbnailviewer.putOverlay(thumbnailviewer.overlay,"visible")},"resize")
} //END init() function

}

thumbnailviewer.dotask(window, function(){thumbnailviewer.init()}, "load") //Initialize script on page load
thumbnailviewer.dotask(window, function(){thumbnailviewer.cleanup()}, "unload")