var address = 'pop_leave.html'; // popup url
var fullScreen = false;         // fullscreen
var height = 640;               // height
var width = 480;                // width

var popup = true;

function DoPopup () {
         if (popup) {
                 if (fullScreen) {
                         height = screen.height;
                         width = screen.width;
                 }
                 mywindow = 
 window.open(address,'mywindow',',toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width='+width+',height='+height+',screenX=0,screenY=0,top=0,left=0');
         }
}