document.getElementsByClassName = function(cl) {
var retnode = [];
var myclass = new RegExp('\\b'+cl+'\\b');
var elem = this.getElementsByTagName('*');
for (var i = 0; i < elem.length; i++) {
var classes = elem[i].className;
if (myclass.test(classes)) retnode.push(elem[i]);
}
return retnode;
}; 


function mainMenu(el)
{
	var lis = document.getElementById(el);
	
	if(lis.className.indexOf("hover") == -1)
		{				
			lis.className += " hover";		
			lis.style.height = "auto";	
		
		}	
	else
		{
			lis.className = "parent";	
			lis.style.height = "22px";	
		
		}	
}

function mainMenu2(el)
{
	var lis = document.getElementById(el);
	
	if(lis.className.indexOf("hover2") == -1)
		{				
			lis.className += " hover2";		

		
		}	
	else
		{
			lis.className = "parent2";	

		}	
}