$(document).ready(function(){
	mainmenu();
        setEqualHeight($(".col"));
});

function mainmenu(){
$(" #nav ul ").css({display: "none"}); // Opera Fix
$(" #nav li").hover(function(){
		$(this).find('ul:first').css({visibility: "visible",display: "none"}).show(400);
		},function(){
		$(this).find('ul:first').css({visibility: "hidden"});
		});
}

/* Equal columns */
function setEqualHeight(columns)
{
    var tallestcolumn = 0;
    columns.each(function() {
        currentHeight = $(this).height();
        if(currentHeight > tallestcolumn) {
            tallestcolumn = currentHeight;
        }
    });
    columns.height(tallestcolumn);
}