var a = document.getElementsByTagName("a");

for(i=0; i<a .length; i++) a[i].onclick = getUrl;

var sitename = "dafinancial.org";

function getUrl(){
    if(!new RegExp(sitename).test(this.href)){
        alert("You are now leaving the Credit Union website.  Denali Alaskan Federal Credit Union and CUSO Financial Services, L.P. are not responsible for the contents found on other websites.");
    }
}