var size_x = screen.width-10;
var size_y = screen.height-65;

<!-- 
function fullScreen(theURL) {
window.open(theURL, '', 'scrollbars=yes,resizable=yes,toolbar=no,location=no,directories=no,personalbar=no,dialog=no,menubar=no,status=no,left=0,top=0,width='+size_x+',height='+size_y+'');
}
// -->