var td = "";
var previus = "";

function overm(td, subm){
	document.getElementById(td).style.background = "url(images/bg_menu_over.gif) repeat-x";
	var obj = document.getElementById(subm);
	if (obj != null) {
		obj.style.display = "block";
	}
}
function overoutm(tdout, submout){
	document.getElementById(tdout).style.background = "transparent";
	var obj = document.getElementById(submout);
	if (obj != null) {
		obj.style.display = "none";
	}
}