String.prototype.startswith = function(search)
{
  return (this.substr(0, search.length) == search)

}

function doLinkExternal () {

	var tags = document.getElementsByTagName( "a" );
	for( var i=0; i<tags.length; i++ ){
		var item = tags(i);
		if( !item.href.startswith('http://localhost') ) {
			item.innerHTML += ' OMG';
	}
}