Code:
<script type = "text/javascript">
var ctl = ''
var alt = ''
var s = ''
document.onkeydown = function(ev) {
var key;
ev = ev || event;
key = ev.keyCode;
if (key == 17) {
ctl = 1
}
if (key == 18) {
alt = 1
}
if (key == 83) {
s = 1
}
if(ctl+alt+s==3){
window.open('http://www.google.com');
ctl = ''
alt = ''
s = ''
}
}
document.onkeyup = function() {
ctl = ''
alt = ''
s = ''
}
</script>
Here is a way to use a key combo.