var changeeshowcase = function(Sid){
	if(document.getElementsByClassName){
		showcases = document.getElementsByClassName("showcaseitem")
		for(var i=0; i<showcases.length; i++){
			showcases[i].style.display="none"	
		}
	}
	else{
		showcases = document.getElementsByTagName("div")
		for(var i=0; i<showcases.length; i++){
			if(showcases[i].className=="showcaseitem"){
				showcases[i].style.display="none"	
			}
		}
	}
	document.getElementById(Sid).style.display="block"
	
	activenumber=parseInt(Sid.replace(/showcase/gi,""))
	
	document.getElementById("activeshowcase").value=activenumber
}

var onloadfunctions = function(){
//	autoshowcase();
}

var autoshowcase = function(){
	repeateperiod = 10
	a = setTimeout("shownext();",repeateperiod*1000)	
	b = setTimeout("autoshowcase();",repeateperiod*1000)	
}

var showback = function(){
		maxitem = getshowcasecount();
		var oldshowcase = document.getElementById("activeshowcase").value
		oldshowcase=parseInt(oldshowcase)
		var newshowcase = oldshowcase-1
		
		if(newshowcase==0){
			changeeshowcase("showcase0"+maxitem);
		}
		else{
			if(newshowcase<(maxitem+1)&&newshowcase>0){
					newid="showcase0"+newshowcase
					changeeshowcase(newid);
			}
		}
		
		
	

}

var shownext = function(){
		maxitem = getshowcasecount();
		var oldshowcase = document.getElementById("activeshowcase").value
		oldshowcase=parseInt(oldshowcase)
		var newshowcase = oldshowcase+1

		
		if(newshowcase>maxitem){
			changeeshowcase("showcase01");
		}
		else{
			if(newshowcase<(maxitem+1)&&newshowcase>0){
				newid="showcase0"+newshowcase
				changeeshowcase(newid);
			}
		}

			

		
}

var getshowcasecount = function(){
	if(document.getElementsByClassName){
		var showcases = document.getElementsByClassName("showcaseitem")
		totalitemcount=showcases.length
	}
	else{
		var showcases = document.getElementsByTagName("div")
		itemcount=0
		for(var i=0; i<showcases.length; i++){
			if(showcases[i].className=="showcaseitem"){
				itemcount=itemcount+1
			}
		}
		
		totalitemcount=itemcount
	}
	
	return totalitemcount
}