There is an unobstrusive way of doing it, use JavaScript.
Create a file called externallinks.js and add this code:
All it does is find every element in the page with the 'a' attribute and if it has the rel="external" attribute, it will add the target="_blank" behaviour.
Code:
addLoadEvent(externalLinks);
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";
}
}
function addLoadEvent(func) {
var oldonload = window.onload;
if (typeof window.onload != 'function') {
window.onload = func;
} else {
window.onload = function() {
oldonload();
func();
}
}
} Link to it within the <head> part of your document:
<script src="externallinks.js" type="text/javascript"></script>
Each link you want to popup a window just add the rel="external" to it. Techically, it still won't make your page valid, because you're adding the attribute, target="_blank", through JavaScript. However, validators won't pick this up and many people use a method similar to this. So your page will be valid as such.
06-21-2007, 11:20 AM
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