// nav rollovers
function menuPopUp(id) {

	if (document.getElementById('nav_psm')) {
	  document.getElementById('nav_psm').style.display = "none";
        }
	if (document.getElementById('nav_jsm')) {
	  document.getElementById('nav_jsm').style.display = "none";
        }
	if (document.getElementById('nav_c')) {
	  document.getElementById('nav_c').style.display = "none";
        }

	if (document.getElementById(id).style.display == "none") 
			{	document.getElementById(id).style.display = "block";
				document.getElementById(id).style.zIndex = "100";
				 }
			else {
			document.getElementById(id).style.display = "none";  }
					
}


function menuHide(id) {
	document.getElementById(id).style.display = "none";
}