function popWin(theURL) {
	var availx;
	var availy;
    var posx;
    var posy;
	var windowWidth;
	var windowHeight;
	availx = screen.availWidth;
	availy = screen.availHeight;
	windowWidth = availx - 100;
	windowHeight = availy - 100;
    posx = (availx - windowWidth)/2;
    posy = (availy - windowHeight)/2;
    window.open(theURL,'ohcowPop','scrollbars=yes,resizable=yes,width='+windowWidth+',height='+windowHeight+',left='+posx+',top='+posy);
}