// JavaScript Document
var dom = document.getElementById;
var ie4=document.all&&navigator.userAgent.indexOf("Opera")==-1;
var ns6=document.getElementById&&!document.all;
var ns4=document.layers;

var VISIBLE = "visible";
var HIDE = (ie4||ns6)? "hidden" : "hide";
var selectContainer = document.getElementsByTagName("SELECT");		

function changeImg(imgname,largeImg,obj){
		document.getElementById("itemimage").src = largeImg.src;
	if(obj)
		showLayer(obj);
	else	
		document.getElementById("mainimg").src = imgname.src;
}

function showLayer(obj){
	for(i=0; i<selectContainer.length; i++)
		selectContainer[i].style.visibility = HIDE;
	if(dom || ie4 || ns6){
		obj.style.visibility = VISIBLE;
		obj.style.display = "block";
	}
			
}

function hideLayerInsets(obj){
	for(i=0; i<selectContainer.length; i++)
		selectContainer[i].style.visibility = VISIBLE;
	if(dom || ie4 || ns6){
      obj.style.visibility = HIDE;
	  obj.style.display = "none";
	}
}