[SOLVED] javascript dropdown menu

[chriscloyd]

I coded a dropdown menu when i hover over a image now the problem im having is for the drop down menu to stay visible while i try to click on one of the links 

 

javascript code

<script>
function hoverover(id)
{	

// close old layer
if(menu) ddmenuitem.style.visibility = 'hidden';

// get new layer and show it
menu = document.getElementById(id);
menu.style.visibility = 'visible';

}
// close showed layer
function hoveroff()
{
if(menu) menu.style.visibility = 'hidden';
}
</script>