if (document.getElementById){
document.write('<style type="text/css">')
document.write('.multiparts_agg, #formnavigation_agg{display:none;}')
document.write('</style>')
}

var curpart_agg=0

function getElementbyClass_agg(classname){
partscollect_agg=new Array()

var inc=0
var alltags_agg=document.all? document.all : document.getElementsByTagName("*")
for (i=0; i<alltags_agg.length; i++){
if (alltags_agg[i].className==classname)
partscollect_agg[inc++]=alltags_agg[i]
}
}

function cycleforward_agg(){
partscollect_agg[curpart_agg].style.display="none"
curpart_agg=(curpart_agg<partscollect_agg.length-1)? curpart_agg+1 : 0
partscollect_agg[curpart_agg].style.display="block"
updatenav()
}

function cycleback_agg(){
partscollect_agg[curpart_agg].style.display="none"
curpart_agg=(curpart_agg>0)? curpart_agg-1 : partscollect_agg.length-1
partscollect_agg[curpart_agg].style.display="block"
updatenav()
}

function updatenav(){
document.getElementById("backbutton").style.visibility=(curpart_agg==0)? "hidden" : "visible"
document.getElementById("forwardbutton").style.visibility=(curpart_agg==partscollect_agg.length-1)? "hidden" : "visible"
}

function onloadfunct_agg(){
getElementbyClass_agg("multiparts_agg")
partscollect_agg[0].style.display="block"
document.getElementById("formnavigation_agg").style.display="block"
updatenav()
}

if (window.addEventListener)
window.addEventListener("load", onloadfunct_agg, false)
else if (window.attachEvent)
window.attachEvent("onload", onloadfunct_agg)
else if (document.getElementById)
window.onload=onloadfunct_agg