Dropdown Menu Selection

Hi,
I have a menu that lets me select from multiple options, and I want that any option that I choose will lead me to another website after clicking the submit button.
How I do this?

This should do it i think...

JavaScript code:
function Selected()
{
window.location = document.getElementById('menu').value;
}
HTML Code:
<select name="dplMenu" id="menu">
<option selected>Select</option>
<option value="your_url1">1</option>
<option value="your_url2">2</option>
<option value="your_url3">3</option>
</select>

<input type="submit" value="Go To" id="button" on-Click="Selected();">