/* Drop-Down Menu Code */

var objNavMenu = null;
var prevObjNavMenu = null;
var prevObjDropMenu = null;

var isIE = null;
if (navigator.appName.indexOf('Microsoft Internet Explorer') != -1) isIE=1;

function menuOut(e) {
	document.onclick = hideDropMenu;
	outObjNavMenu = document.getElementById(this.id);
}

function showDropMenu(menuName) {
	objDropMenu = document.getElementById(menuName);
	if (prevObjDropMenu == objDropMenu) {
			hideDropMenu();
		return;
	}
	if (prevObjDropMenu != null) hideDropMenu();
	objNavMenu = document.getElementById('nav'+menuName);
	if (objDropMenu) {
		xPos = objNavMenu.offsetParent.offsetLeft + objNavMenu.offsetLeft;
		yPos = objNavMenu.offsetParent.offsetTop + objNavMenu.offsetParent.offsetHeight;
		if (isIE) {
			xPos -= 2;
		}
		objDropMenu.style.left = xPos + 'px';
		objDropMenu.style.top = yPos + 'px';
		objDropMenu.style.visibility = 'visible';
		prevObjDropMenu = objDropMenu;
		prevObjNavMenu = objNavMenu;
	}

}

function hideDropMenu() {
	document.onclick = null;
	if (prevObjDropMenu) {
		prevObjDropMenu.style.visibility = 'hidden';
		prevObjDropMenu = null;
	}
	objNavMenu = null;
}