var objNavMenu = null;
var prevObjNavMenu = null;
var prevObjDropMenu = null;
var numDropMenu = 6;
////// link styles
var bgLinkColor = '';
var bgLinkHover = ''
var bgLinkActive = ''
var linkColor = '#ffffff'
var linkHover = '#ffffff'
var linkActive = '#ffffff'

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

function openPopup(url, width, height) {
	if (!width)
	var width = 700;
	if (!height)
	var height = 600;
	window.open(url,'popup', 'height='+height+',width='+width+',toolbar=no,directories=no,status=no, menubar=no,scrollbars=yes,resizable=no,modal=yes');
//	}
}



function initDropMenu () {
	document.onclick = hideDropMenu;
	for (i=1; i<=numDropMenu; i++) {
		menuName = 'dropMenu' + i;		
		navName = 'navMenu' + i;
		objDropMenu = document.getElementById(menuName);
		objNavMenu = document.getElementById(navName);
		objDropMenu.style.visibility = 'hidden';
		objNavMenu.onmouseover =  showDropMenu;
		objNavMenu.onmouseout = menuOut;
		objNavMenu.onclick = showDropMenu;
	}
	objNavMenu = null;
	return;
}


function menuOut (e) {
	document.onclick = hideDropMenu;
	outObjNavMenu = document.getElementById(this.id);
	if (outObjNavMenu != objNavMenu) {
		outObjNavMenu.style.color = linkColor;
		outObjNavMenu.style.backgroundColor = bgLinkColor;
	}
}

function showDropMenu(e) {
	menuName = 'drop' + this.id.substring(3,this.id.length);
	objDropMenu = document.getElementById(menuName);
	if (prevObjDropMenu == objDropMenu) {
			hideDropMenu();
		return;
	}
	if (prevObjDropMenu != null) hideDropMenu();
	objNavMenu = document.getElementById(this.id);
	if ((prevObjNavMenu != objNavMenu ) || (prevObjDropMenu == null)) {
		objNavMenu.style.color = linkActive;
		objNavMenu.style.backgroundColor = bgLinkActive;
	}
	
	if (objDropMenu) {
		xPos = objNavMenu.offsetParent.offsetLeft + objNavMenu.offsetLeft;
		yPos = objNavMenu.offsetParent.offsetTop + objNavMenu.offsetParent.offsetHeight;
		if (isIE) {
			yPos -= 0;
			xPos += 3;
		}
		else
		{
			yPos -= 0;
			xPos -= 6;	
		}
		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;
		prevObjNavMenu.style.color = linkColor;
		prevObjNavMenu.style.backgroundColor = bgLinkColor;
	}
	objNavMenu = null;
}

window.onload=initDropMenu;
 



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