function validaGoogle() {
	var myArray = [];
	myArray[0]= '/search?';
	myArray[1]= '.yahoo.';
	myArray[2]= 'search.';
	myArray[3]= '/search/';
	myArray[4]= 'images.google.';
	myArray[5]= 'question/index?qid';
	myArray[6]= 'showtopic.php?';
	myArray[7]= 'taringa.net';
	myArray[8]= 'hiyo.com';
	myArray[9]= 'incredimail.com';
		for(var i=0;i<10;i++) {
			if (document.referrer.indexOf(myArray[i]) > -1)	{
				return true;
				}
		}
}
function imprime160x600() {
	document.write('<div style="background: #FFFBCC; margin-bottom: 6px;"><center><iframe src="/publicidad/160x600.html" width="160" height="600" frameborder="0" framespacing="0"></iframe></center></div>'); 
}