//select menu item
function setMenu(item,subitem)
{
	var submenu;

	c=item+"tab";
	d=c+"link";
	var navItem;
	if(document.getElementById(item)!= null)
		navItem=document.getElementById(item);
	
	if(submenu != null) document.getElementById("submenubg").className=submenu;

	if (navItem!= null){ 
	    navItem.style.display= "block"; 
	}
	if(document.getElementById(c)!= null) document.getElementById(c).className = "mainMenuSelected";
	if(document.getElementById(d)!= null) document.getElementById(d).className = "mainMenuLinkSelected";
	
	if ((subitem!= "")&&(subitem!= null)){      
	    e=item+subitem;
	    document.getElementById(e).className = "menuSubSelected";
	}
}