function externalLinks() 
{ 
	if (!document.getElementsByTagName) return; 
 	var anchors = document.getElementsByTagName("a"); 
 	for (var i=0; i<anchors.length; i++) 
	{ 
   		var anchor = anchors[i]; 
   		if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external") 
		{
        	anchor.target = "_blank"; 
         	anchor.title = anchor.title + " (opens in a new browser window)";
			var children = anchor.childNodes;                // Now get all children of n

			var oImage = children[0];						//image within the link
			 
			if (oImage.tagName=="IMG")						//Is it definitly an image?
			{
				children[0].alt = children[0].alt + " (opens in a new browser window)";
			}
    	}
 	} 
} 
window.onload = externalLinks;