// script to submit search form data
function searchSite(thisForm) {
	if (thisForm.search.value.length != 0) {
		thisForm.submit();
		return true;
	}
	return false;
}

// script to expand/contract main menu
var prevMenuOn = null;
var prevMenuOff = null;
var prevIcon = null;
function showSubMenu(menuId) {
	if (prevMenuOn) {
		document.getElementById(prevMenuOn).style.display = "none";
		if (document.getElementById(prevIcon)) {
			document.getElementById(prevIcon).src = "/images/icon_menu_item_expand.gif";
			document.getElementById(prevIcon).alt = "click to display menu";
		}
	}
	if (prevMenuOff) {
		document.getElementById(prevMenuOff).style.display = "block";
	}
	var thisMenuOn = "subMenuOn_"+menuId;
	var thisMenuOff = "subMenuOff_"+menuId;
	var thisIcon = "subMenuIcon_"+menuId
	if (thisMenuOn == prevMenuOn) {
		if (document.getElementById(thisMenuOn)) {
			document.getElementById(thisMenuOn).style.display = "none";
			prevMenuOn = null;
		}
		if (document.getElementById(thisMenuOff)) {
			document.getElementById(thisMenuOff).style.display = "block";
			prevMenuOff = null;
		}
		if (document.getElementById(thisIcon)) {
			document.getElementById(thisIcon).src = "/images/icon_menu_item_expand.gif";
			document.getElementById(thisIcon).alt = "click to display menu";
			prevIcon = null;
		}
	} else {
		if (document.getElementById(thisMenuOn)) {
			document.getElementById(thisMenuOn).style.display = "block";
			prevMenuOn = thisMenuOn;
		}
		if (document.getElementById(thisMenuOff)) {
			document.getElementById(thisMenuOff).style.display = "none";
			prevMenuOff = thisMenuOff;
		}
		if (document.getElementById(thisIcon)) {
			document.getElementById(thisIcon).src = "/images/icon_menu_item_contract.gif";
			document.getElementById(thisIcon).alt = "click to hide menu";
			prevIcon = thisIcon;
		}
	}
}