var pr_count = 0;
var pr_sec = 10000;
var pr_zindex_base = 100;
var pr_currentObj = 0;
var pr_prevObj = null;
var pr_objects = new Array();
var pr_list_objects = new Array();
var pr_hn = null;
function pr_init(){
	var d = window.document;
	var tagObj = document.getElementsByTagName("div");
	for(i=0;i<tagObj.length;i++) {
		if(tagObj[i].className == "pr_section"){
			tagObj[i].style.zIndex = pr_zindex_base - pr_count;
			tagObj[i].onmouseover = function(){
				pr_pause();
			}
			tagObj[i].onmouseout = function(){
				pr_hn = setTimeout("pr_rotation()",pr_sec);
			}
			pr_objects.push(tagObj[i]);
			if(d.getElementById(tagObj[i].id+"_list")){
				pr_list_objects[tagObj[i].id+"_list"] = pr_count;
				d.getElementById(tagObj[i].id+"_list").style.cursor = "pointer";
				d.getElementById(tagObj[i].id+"_list").onclick = function(){
					pr_switch(this);
				}
			}
			pr_count++;
		}
	}
	if(d.getElementById(pr_objects[pr_currentObj].id+"_list"))
		d.getElementById(pr_objects[pr_currentObj].id+"_list").className = "pr_list_current";
	pr_hn = setTimeout("pr_rotation()",pr_sec);
}
function pr_switch(obj){
	var d = window.document;
	clearTimeout(pr_hn);
	if(d.getElementById(pr_objects[pr_currentObj].id+"_list"))
		d.getElementById(pr_objects[pr_currentObj].id+"_list").className = "pr_list_enabled";
	pr_currentObj = pr_list_objects[obj.id];
	if(d.getElementById(pr_objects[pr_currentObj].id+"_list"))
		d.getElementById(pr_objects[pr_currentObj].id+"_list").className = "pr_list_current";
	var zIndex_ajust = 0;
	while(pr_objects.length > zIndex_ajust){
		pr_objects[((pr_currentObj+zIndex_ajust) % pr_objects.length)].style.zIndex = pr_zindex_base - zIndex_ajust;
		zIndex_ajust++;
	}
	pr_hn = setTimeout("pr_rotation()",pr_sec);
}
function pr_pause(){
	clearTimeout(pr_hn);
}
function pr_rotation(){
	fadeOpacity(pr_objects[pr_currentObj].id,100);
}
function fadeOpacity(objId,opacity){
	var d = window.document;
	if(opacity > 0){
		clearTimeout(pr_hn);
		setOpacity(objId,(opacity/100))
		setTimeout("fadeOpacity('"+objId+"',"+(opacity-5)+")",10);
	}
	else {
		clearTimeout(pr_hn);
		pr_objects[pr_currentObj].style.display = "none";
		if(d.getElementById(pr_objects[pr_currentObj].id+"_list"))
			d.getElementById(pr_objects[pr_currentObj].id+"_list").className = "pr_list_enabled";
		pr_prevObj = pr_currentObj;
		pr_currentObj++;
		pr_currentObj = pr_currentObj % pr_objects.length;
		if(d.getElementById(pr_objects[pr_currentObj].id+"_list"))
			d.getElementById(pr_objects[pr_currentObj].id+"_list").className = "pr_list_current";
		var zIndex_ajust = 0;
		while(pr_objects.length > zIndex_ajust){
			pr_objects[((pr_currentObj+zIndex_ajust) % pr_objects.length)].style.zIndex = pr_zindex_base - zIndex_ajust;
			zIndex_ajust++;
		}
		pr_objects[pr_prevObj].style.display = "block";
		setOpacity(pr_objects[pr_prevObj].id,1);
		pr_hn = setTimeout("pr_rotation()",pr_sec);
	}
}
function setOpacity(layName,arg) {
	var ua = navigator.userAgent;
	if(document.layers){
		if(arg > 0)
			document.layers[layName].visibility = 'visible';
		else if(arg==0)
			document.layers[layName].visibility = 'hidden';
	}
	else if(navigator.appVersion.indexOf("Safari") > -1 || ua.indexOf("Opera") > -1)
		document.getElementById(layName).style.opacity = arg;
	else if( ua.indexOf('Mac_PowerPC') !=-1 && document.all ){
		if(arg > 0)
			document.all(layName).style.visibility = 'visible';
		else if(arg==0)
			document.all(layName).style.visibility = 'hidden';
	}
	else if(document.all) {
		document.all(layName).style.filter="alpha(opacity=0)";
		document.all(layName).filters.alpha.Opacity	= (arg * 100)
	}
	else if(ua.indexOf('Gecko')!=-1)
		document.getElementById(layName).style.MozOpacity = arg;
}
pr_init();