dropDownMenu = function()
{
	arr_elements = new Array();
	arr_elements[0] = 'nav-menu';
	arr_elements[1] = 'brands';
	for(var j = 0; j < arr_elements.length; j++)
	{
		var nav_element = document.getElementById(arr_elements[j]).getElementsByTagName("LI");
		for (var i=0; i < nav_element.length; i++)
		{
			nav_element[i].onmouseover = function()
			{
				this.className += " dropdown";
			}
			nav_element[i].onmouseout = function()
			{
				this.className = this.className.replace(new RegExp(" dropdown\\b"), "");
			}
		}
	}
}

if (window.attachEvent)
{
	window.attachEvent("onload", dropDownMenu);
}