document.write('<style type="text/css">' //write out CSS for class ".hidepeice" that hides pieces of contents within pages
    +'.hidepiece{display:none}\n'
    +'@media print{.hidepiece{display:block !important;}}\n'
    +'</style>')
    
function virtualpaginate(config){ //config: {piececlass:, piececontainer:, pieces_per_page:, defaultpage:, persist}
    this.piececlass=config.piececlass
    var elementType=(typeof config.piececontainer=="undefined")? "div" : config.piececontainer //The type of element used to divide up content into pieces. Defaults to "div"
    this.pieces=virtualpaginate.collectElementbyClass(config.piececlass, elementType) //get total number of divs matching class name
    //Set this.chunksize: 1 if "chunksize" param is undefined, "chunksize" if it's less than total pieces available, or simply total pieces avail (show all)
    this.chunksize=(typeof config.pieces_per_page=="undefined")? 1 : (config.pieces_per_page>0 && config.pieces_per_page<this.pieces.length)? config.pieces_per_page : this.pieces.length
    this.pagecount=Math.ceil(this.pieces.length/this.chunksize) //calculate number of "pages" needed to show the divs
    this.paginatediv=[], this.flatviewlinks=[], this.cpspan=[], this.selectmenu=[]
    this.persist=config.persist
    var persistedpage=virtualpaginate.getCookie("dd_"+this.piececlass) || 0
    var urlselectedpage=virtualpaginate.urlparamselect(this.piececlass) //returns null or index from: mypage.htm?piececlass=index
    this.currentpage=(typeof urlselectedpage=="number")? urlselectedpage : ((this.persist)? persistedpage : config.defaultpage)
    this.currentpage=(this.currentpage<this.pagecount)? parseInt(this.currentpage) : 0 //ensure currentpage is within range of available pages
    this.showpage(this.currentpage) //Show selected page
}

// -------------------------------------------------------------------
// PUBLIC: navigate(keyword)- Calls this.showpage() based on parameter passed (0=page1, 1=page2 etc, "next", "first", or "last")
// -------------------------------------------------------------------

virtualpaginate.prototype.navigate=function(keyword){
    var prevlinkindex=this.currentpage //Get index of last clicked on page
    if (keyword=="previous")
        this.currentpage=(this.currentpage>0)? this.currentpage-1 : (this.currentpage==0)? this.pagecount-1 : 0
    else if (keyword=="next")
        this.currentpage=(this.currentpage<this.pagecount-1)? this.currentpage+1 : 0
    else if (keyword=="first")
        this.currentpage=0
    else if (keyword=="last")
        this.currentpage=this.pagecount-1 //last page number
    else
        this.currentpage=parseInt(keyword)
    this.currentpage=(this.currentpage<this.pagecount)? this.currentpage : 0 //ensure pagenumber is within range of available pages
    this.showpage(this.currentpage)
    for (var p=0; p<this.paginatediv.length; p++){ //loop through all pagination DIVs
        if (this.flatviewpresent)
            this.flatviewlinks[p][prevlinkindex].className="" //"Unhighlight" previous page (before this.currentpage increments)
        if (this.selectmenupresent)
            this.selectmenu[p].selectedIndex=this.currentpage
        if (this.flatviewpresent)
            this.flatviewlinks[p][this.currentpage].className="selected" //"Highlight" current page
    }
}


// -------------------------------------------------------------------
// PUBLIC: buildpagination()- Create pagination interface by calling one or more of the paginate_build_() functions
// -------------------------------------------------------------------

virtualpaginate.prototype.buildpagination=function(divids, optnavtext){
    var divids=(typeof divids=="string")? [divids] : divids //force divids to be an array of ids
    var primarypaginatediv=divids.shift() //get first id within divids[]
    var paginaterawHTML=document.getElementById(primarypaginatediv).innerHTML
    this.paginate_build(primarypaginatediv, 0, optnavtext)
    for (var i=0; i<divids.length; i++){
        document.getElementById(divids[i]).innerHTML=paginaterawHTML
        this.paginate_build(divids[i], i+1, optnavtext)
    }
}

// -------------------------------------------------------------------
// PRIVATE utility functions
// -------------------------------------------------------------------

virtualpaginate.collectElementbyClass=function(classname, element){ //Returns an array containing DIVs with specified classname
    if (document.querySelectorAll){
        var pieces=document.querySelectorAll(element+"."+classname) //return pieces as HTMLCollection
    }
    else{
        var classnameRE=new RegExp("(^|\\s+)"+classname+"($|\\s+)", "i") //regular expression to screen for classname within element
        var pieces=[]
        var alltags=document.getElementsByTagName(element)
        for (var i=0; i<alltags.length; i++){
            if (typeof alltags[i].className=="string" && alltags[i].className.search(classnameRE)!=-1)
                pieces[pieces.length]=alltags[i] //return pieces as array
        }
    }
    return pieces
}

virtualpaginate.urlparamselect=function(vpclass){
    var result=window.location.search.match(new RegExp(vpclass+"=(\\d+)", "i")) //check for "?piececlass=2" in URL
    return (result==null)? null : parseInt(RegExp.$1) //returns null or index, where index (int) is the selected virtual page's index
}

virtualpaginate.getCookie=function(Name){ 
    var re=new RegExp(Name+"=[^;]+", "i"); //construct RE to search for target name/value pair
    if (document.cookie.match(re)) //if cookie found
        return document.cookie.match(re)[0].split("=")[1] //return its value
    return null
}

virtualpaginate.setCookie=function(name, value){
    document.cookie = name+"="+value
}

// -------------------------------------------------------------------
// PRIVATE: showpage(pagenumber)- Shows a page based on parameter passed (0=page1, 1=page2 etc)
// -------------------------------------------------------------------

virtualpaginate.prototype.showpage=function(pagenumber){
    var totalitems=this.pieces.length //total number of broken up divs
    var showstartindex=pagenumber*this.chunksize //array index of div to start showing per pagenumber setting
    var showendindex=showstartindex+this.chunksize-1 //array index of div to stop showing after per pagenumber setting
    for (var i=0; i<totalitems; i++){
        if (i>=showstartindex && i<=showendindex)
            this.pieces[i].style.display="block"
        else
            this.pieces[i].style.display="none"
    }
    if (this.persist){ //if persistence enabled
        virtualpaginate.setCookie("dd_"+this.piececlass, this.currentpage)
    }
    if (this.cpspan.length>0){ //if <span class="paginateinfo> element is present, update it with the most current info (ie: Page 3/4)
        for (var p=0; p<this.cpspan.length; p++)
            this.cpspan[p].innerHTML='P&aacute;gina '+(this.currentpage+1)+' de '+this.pagecount
    }
}

// -------------------------------------------------------------------
// PRIVATE: build() methods- Various methods to create pagination interfaces
// paginate_paginate_build()- Main build() paginate function
// paginate_output_flatview()- Accepts <span class="flatview"> element and populates it with sequential pagination links
// paginate_paginate_build_flatview()- Parses the modified <span class="flatview"> element and assigns click behavior to the pagination links
// paginate_build_selectmenu(paginatedropdown)- Accepts an empty SELECT element and turns it into pagination menu
// paginate_build_regularlinks(paginatelinks)- Accepts a collection of links and screens out/ creates pagination out of ones with specific "rel" attr
// paginate_build_cpinfo(cpspan)- Accepts <span class="paginateinfo"> element and displays current page info (ie: Page 1/4)
// -------------------------------------------------------------------

virtualpaginate.prototype.paginate_build=function(divid, divpos, optnavtext){
    var instanceOfBox=this
    var paginatediv=document.getElementById(divid)
    if (this.chunksize==this.pieces.length){ //if user has set to display all pieces at once, no point in creating pagination div
        paginatediv.style.display="none"
        return
    }
    var paginationcode=paginatediv.innerHTML //Get user defined, "unprocessed" HTML within paginate div
    if (paginatediv.getElementsByTagName("select").length>0) //if there's a select menu in div
        this.paginate_build_selectmenu(paginatediv.getElementsByTagName("select")[0], divpos, optnavtext)
    if (paginatediv.getElementsByTagName("a").length>0) //if there are links defined in div
        this.paginate_build_regularlinks(paginatediv.getElementsByTagName("a"))
    var allspans=paginatediv.getElementsByTagName("span") //Look for span tags within passed div
    for (var i=0; i<allspans.length; i++){
        if (allspans[i].className=="flatview")
            this.paginate_output_flatview(allspans[i], divpos, optnavtext)
        else if (allspans[i].className=="paginateinfo")
            this.paginate_build_cpinfo(allspans[i], divpos)
    }
    this.paginatediv[divpos]=paginatediv
}

virtualpaginate.prototype.paginate_output_flatview=function(flatviewcontainer, divpos, anchortext){
    var flatviewhtml=""
    var anchortext=anchortext || new Array()
    for (var i=0; i<this.pagecount; i++){
        if (typeof anchortext[i]!="undefined") //if custom anchor text for this link exists
            flatviewhtml+='<a href="#flatview" rel="'+i+'">'+anchortext[i]+'</a> ' //build pagination link using custom anchor text
        else
            flatviewhtml+='<a href="#flatview" rel="'+i+'">'+(i+1)+'</a> ' //build  pagination link using auto incremented sequential number instead
    }
    flatviewcontainer.innerHTML=flatviewhtml
    this.paginate_build_flatview(flatviewcontainer, divpos, anchortext)
}

virtualpaginate.prototype.paginate_build_flatview=function(flatviewcontainer, divpos, anchortext){
    var instanceOfBox=this
    var flatviewhtml=""
    this.flatviewlinks[divpos]=flatviewcontainer.getElementsByTagName("a")
    for (var i=0; i<this.flatviewlinks[divpos].length; i++){
        this.flatviewlinks[divpos][i].onclick=function(){
            var prevlinkindex=instanceOfBox.currentpage //Get index of last clicked on flatview link
            var curlinkindex=parseInt(this.getAttribute("rel"))
            instanceOfBox.navigate(curlinkindex)
            return false
        }
    }
    this.flatviewlinks[divpos][this.currentpage].className="selected" //"Highlight" current flatview link
    this.flatviewpresent=true //indicate flat view links are present
}

virtualpaginate.prototype.paginate_build_selectmenu=function(paginatedropdown, divpos, anchortext){
    var instanceOfBox=this
    var anchortext=anchortext || new Array()
    this.selectmenupresent=1
    for (var i=0; i<this.pagecount; i++){
        if (typeof anchortext[i]!="undefined") //if custom anchor text for this link exists, use anchor text as each OPTION's text
            paginatedropdown.options[i]=new Option(anchortext[i], i)
        else //else, use auto incremented, sequential numbers
            paginatedropdown.options[i]=new Option("P&aacute;gina "+(i+1)+" de "+this.pagecount, i)
    }
    paginatedropdown.selectedIndex=this.currentpage
    setTimeout(function(){paginatedropdown.selectedIndex=instanceOfBox.currentpage}, 500) //refresh currently selected option (for IE's sake)
    paginatedropdown.onchange=function(){
    instanceOfBox.navigate(this.selectedIndex)
    }
    this.selectmenu[divpos]=paginatedropdown
    this.selectmenu[divpos].selectedIndex=this.currentpage //"Select" current page's corresponding option
}

virtualpaginate.prototype.paginate_build_regularlinks=function(paginatelinks){
    var instanceOfBox=this
    for (var i=0; i<paginatelinks.length; i++){
        var currentpagerel=paginatelinks[i].getAttribute("rel")
        if (currentpagerel=="previous" || currentpagerel=="next" || currentpagerel=="first" || currentpagerel=="last"){ //screen for these "rel" values
            paginatelinks[i].onclick=function(){
                instanceOfBox.navigate(this.getAttribute("rel"))
                return false
            }

        }
    }
}

virtualpaginate.prototype.paginate_build_cpinfo=function(cpspan, divpos){
    this.cpspan[divpos]=cpspan
    cpspan.innerHTML='P&aacute;gina '+(this.currentpage+1)+' de '+this.pagecount
}