function showmenu(elmnt)
{
document.getElementById(elmnt).style.visibility="visible";
}
function hidemenu(elmnt)
{
document.getElementById(elmnt).style.visibility="hidden";
}
function showmenu2(elmnt , name)
{
var auxStr = "";
auxStr = damePos(document.getElementById(name)); 
auxStr += "px";

document.getElementById(elmnt).style.left = auxStr;
document.getElementById(elmnt).style.visibility="visible";
var str = '';
str= document.getElementById(name).src;
str= str.substring(0,str.length - 4) + '_over.jpg';
document.getElementById(name).src= str;
}

function hidemenu2(elmnt , name)
{
document.getElementById(elmnt).style.visibility="hidden";
var str = '';
str= document.getElementById(name).src;
str= str.substring(0,str.length - 9) + '.jpg';
document.getElementById(name).src= str;
}

function showmenu3(name)
{
var str = '';
str= document.getElementById(name).src;
str= str.substring(0,str.length - 4) + '_over.jpg';
document.getElementById(name).src= str;
}

function hidemenu3(name)
{
var str = '';
str= document.getElementById(name).src;
str= str.substring(0,str.length - 9) + '.jpg';
document.getElementById(name).src= str;
}

function damePos(obj) {
	var curleft = curtop = 0;
	if (obj.offsetParent) {
		curleft = obj.offsetLeft;
		while (obj = obj.offsetParent) {
			curleft += obj.offsetLeft;
		}
	return curleft + 3;
	}
}