function launchWindow(page, width, height) {
 OpenWin = this.open(page, "Screenmedia", "toolbar=no, menubar=no ,location=no, scrollbars=no, resizable=no, width=" + width + ", height=" + height + ", top=" + (screen.height/2 - height/2) + ", left=" + (screen.width/2 - width/2) + "\"");
}

function openSNH() {
if (screen.width<1024&&screen.height<768) { //if less than 1024X768
alert("We have checked your screen resolution and it does not seem to be 1024x768 or greater; please note, this presentation may not display properly.");
}
var iMyWidth;
var iMyHeight;

iMyWidth = screen.width;

iMyHeight = screen.height;

var win2 = window.open("http://www.screenmedia.co.uk/go/projects/snh/","Window2","width=" + iMyWidth + ", height=" + iMyHeight + ",fullscreen=yes,status=no,resizable=yes,left=0,top=0,toolbar=no,menubar=no,scrollbars=no,location=no,directories=no");
 win2.focus();
}