function tattoo(a)
 {
   var prop = "width=800,height=600,menubar=no,location=no,personalbar=no,status=no;titlebar=no,toolbar=no";
 	window.open(a, '_blank', prop);
 }
 
 function op(url, width, height)
 {
 	var prop = "width="+width+",height="+height+",menubar=no,scrollbars=yes,location=no,personalbar=no,status=no;titlebar=no,toolbar=no,screenX="+((screen.availWidth-width)/2)+"screenY="+((screen.availHeight-height)/2);
 	window.open(url, '_blank', prop);
	return false;
 }