function popup(name,width,height,data,type) {
  var randnum = Math.random();
  var xpos = Math.round((screen.width-width)/2);
  var ypos = Math.round((screen.height-height)/2.5);
  var params = 'width=' + width + ',height=' + height + ',screenX=' + xpos + ',screenY=' + ypos + ',left=' + xpos + ',top=' + ypos + ',resizable=yes,scrollbars=yes,status=yes';
  if (type == "url") {
    data += '&temp=' + randnum;
    eval (name + " = window.open(data,'" + name + "',params);");
  }
  else {
    eval (name + " = window.open('','" + name + "',params);");
    eval (name + ".document.open();");
    eval (name + ".document.write(data);");
    eval (name + ".document.close();");
  }
  if (window.focus) {
    eval (name + ".focus();");
  }
}