var link = ''; 
var high = '';
var wide = '';
function mov_window(url,wide,high) {
if (link && !link.closed) {
  link.close(); }
	wide = wide+170;
	high = high+65;
link = 
window.open(url,"main_win","toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=1,width="+wide+",height="+high+",left=2,top=2");
}