var pre1 = new Image();
pre1.src = 'images/h_contact_on.gif';

var pre2 = new Image();
pre2.src = 'images/h_clients_on.gif';

var pre3 = new Image();
pre3.src = 'images/h_services_on.gif';

var pre4 = new Image();
pre4.src = 'images/h_about_on.gif';

function globalOver(img) {
if(document.images) {
document.images[img].src = 'images/'+img+'_on.gif';
}
}

function globalOut(img) {
if(document.images) {
document.images[img].src = 'images/'+img+'_off.gif';
}
}

function ShowMe() {
	var browserName = navigator.appName;
	var browserVersion = parseInt(navigator.appVersion);
	
	if ( (browserName == "Microsoft Internet Explorer") && (browserVersion >= 4) || 
		 (browserName == "Netscape") && (browserVersion >= 3) ) {
		window.focus();
		}
}

function PopIt(page) {
window.open(page,'PopWin','toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=yes,top=0,left=0,width=500,height=350');
}