leftPos = 300;
topPos = 200;
browserName=navigator.appName;
browserVer=parseInt(navigator.appVersion);
ns3up=(browserName=="Netscape"&&browserVer >=3);
ie4up=(browserName.indexOf("Microsoft")>=0&&browserVer>=4);
function dobig(){if (ns3up||ie4up){
if (screen) {
leftPos = (screen.width / 2) - 320;
topPos = (screen.height / 2) - 247;
}
myWindow=window.open("movie.php", "myWindow", "width=654,height=540,status=no,scrollbars=no,resizable=no,toolbar=no,menubar=no,left="+leftPos+",top="+topPos);
myWindow.focus(); 
}}
function dosmall(){if (ns3up||ie4up){
if (screen) {
leftPos = (screen.width / 2) - 170;
topPos = (screen.height / 2) - 150;
}
myWindow=window.open("moviesmall.php", "myWindow", "width=340,height=270,status=no,scrollbars=no,resizable=no,toolbar=no,menubar=no,left="+leftPos+",top="+topPos);
myWindow.focus(); 
}}