for example try this :
<a href="http://www.google.com" id="myLink1">open link 1</a><br/> <a href="http://www.youtube.com" id="myLink2">open link 2</a>
document.getElementById("myLink1").onclick = function() {
window.open(
"http://www.facebook.com"
);
return false;
};
document.getElementById("myLink2").onclick = function() {
window.open(
"http://www.yahoo.com"
);
return false;
};