Type.registerNamespace('Vamsoft');

Vamsoft.ExternalLinkHandler = function(evt) {
    evt.preventDefault();
    window.open(this.href);return false;       
}

Sys.Application.add_load(function() {
    var anchors = document.getElementsByTagName('a');

    for (var i = 0; i < anchors.length; ++i) {
        var a = anchors[i];
        if (a.getAttribute('rel') == 'external') $addHandler(a, 'click', Function.createDelegate(a, Vamsoft.ExternalLinkHandler));
    }
});