function urls()
{
if(!document.getElementsByTagName) return false;
var links = document.getElementsByTagName("a");
for (var i=0; i < links.length;i++)
{
if (links[i].getAttribute("href").indexOf("http")!=-1) links[i].onclick = function ()
{
return !window.open(this.href);
}
}
}
window.onload=urls;
