Function Script Problem

[Vachico]

Hello,

I have a problem with my function script.

I used this before to popup another site but now I want to use it to open a site in the same window.

What I have to change here to open in the same window and not to popup in a new?

function SelectPop(th) {
windowHandle = window.open(th.options[th.selectedIndex].value,'menu');
windowHandle.focus();
}

Thanks for help