var menuReady = false;

function popupMenuSH() { 
 		var i, visStr, args, theObj,x;
		args = popupMenuSH.arguments;
 		for (i=0; i<(args.length-2); i+=3) { //with arg triples (objNS,objIE,visStr)
    		if(args[i+2]==1) {
				visStr = 'show';
			}
			else
			{
				visStr = 'hide';
			}
			if (navigator.appName == 'Netscape' && document.layers != null) {
				theObj = eval('document.layers["menu' + String(args[i]) + '"]');
				if (theObj) theObj.visibility = visStr;
				
			} else if (document.all != null) { //IE
      				if (visStr == 'show') visStr = 'visible'; //convert vals
      				if (visStr == 'hide') visStr = 'hidden';
      				theObj = eval('document.all["menu' + String(args[i+1]) + '"]');
					
      				if (theObj) theObj.style.visibility = visStr;
			}
		}
	};
	
	
	var ns4 = (document.layers)? true:false;
	var ie4 = (document.all)? true:false;

	function check() {
		if (ns4 && document.layers) {
			document.menu1.onmouseover=new Function("popupMenuSH(1,1,1)");
			document.menu1.onmouseout=new Function("popupMenuSH(1,1,0)");
			document.menu2.onmouseover=new Function("popupMenuSH(2,2,1)");
			document.menu2.onmouseout=new Function("popupMenuSH(2,2,0)");
			document.menu3.onmouseover=new Function("popupMenuSH(3,3,1)");
			document.menu3.onmouseout=new Function("popupMenuSH(3,3,0)");
			document.menu4.onmouseover=new Function("popupMenuSH(4,4,1)");
			document.menu4.onmouseout=new Function("popupMenuSH(4,4,0)");
			document.menu5.onmouseover=new Function("popupMenuSH(5,5,1)");
			document.menu5.onmouseout=new Function("popupMenuSH(5,5,0)");
			document.menu6.onmouseover=new Function("popupMenuSH(6,6,1)");
			document.menu6.onmouseout=new Function("popupMenuSH(6,6,0)");
			
		}
		if (ie4 && document.all) {
			
		}
		
	};

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		graphic_tapes_over = newImage("images/highres/graphic-tapes_over.gif");
		graphic_alerts_over = newImage("images/highres/graphic-alerts_over.gif");
		graphic_started_over = newImage("images/highres/graphic-started_over.gif");
		graphic_support_over = newImage("images/highres/graphic-support_over.gif");
		graphic_calendar_over = newImage("images/highres/graphic-calendar_over.gif");
		graphic_about_over = newImage("images/highres/graphic-about_over.gif");
		graphic_articles_over = newImage("images/highres/graphic-articles_over.gif");
		graphic_membership_over = newImage("images/highres/graphic-membership_over.gif");
		started_tapes_over = newImage("images/highres/started-tapes_over.gif");
		started_over = newImage("images/highres/started-over.gif");
		started_support_over = newImage("images/highres/started-support_over.gif");
		started_calendar_over = newImage("images/highres/started-calendar_over.gif");
		started_about_over = newImage("images/highres/started-about_over.gif");
		started_articles_over = newImage("images/highres/started-articles_over.gif");
		started_membership_over = newImage("images/highres/started-membership_over.gif");
		support_over = newImage("images/highres/support-over.gif");
		alerts_over = newImage("images/highres/alerts-over.gif");
		membership_over = newImage("images/highres/membership-over.gif");
		articles_over = newImage("images/highres/articles-over.gif");
		about_over = newImage("images/highres/about-over.gif");
		calendar_over = newImage("images/highres/calendar-over.gif");
		tapes_over = newImage("images/highres/tapes-over.gif");
		preloadFlag = true;
	}
}