function openWindow() {
	var file = 'flash.php';
	var w = 1000;
	var h = 700;
	var file,wProperties,x,y,w,h;

	x = (screen.width) ? (screen.width-w)/2 : 0;
	y = (screen.height) ? (screen.height-h)/2 : 0;
	
	wProperties="left="+x+",top="+y+",width="+w+",height="+h+",menubar=no,toolbar=no";
	document.write ('x: '+x);
	document.write ('y: '+y);
	document.write ('w: '+w);
	document.write ('h: '+h);
	window.open(file,"newWindow",wProperties);
}