window.onload = function(){
	showSubNav();
}
function showSubNav(){
    if (document.all&&document.getElementById) {
	   var li = document.getElementById('products_li');
	   li.onmouseover = function(){
		  var ul = document.getElementById('products_ul');
		  ul.style.display = 'block';
           }
	   li.onmouseout = function(){
		  var ul = document.getElementById('products_ul');
		  ul.style.display = 'none';
           }
    }
}