var timeout         = 500;
var closetimer		= 0;
var ddmenuitem      = 0;

function js_open()
{	
	js_canceltimer();
	js_close();
	ddmenuitem = jQuery(this).find('ul').eq(0).css('visibility', 'visible');
}

function js_close()
{	
	if(ddmenuitem) ddmenuitem.css('visibility', 'hidden');
}

function js_timer()
{	
	closetimer = window.setTimeout(js_close, timeout);
}

function js_canceltimer()
{	
	if(closetimer)
	{	window.clearTimeout(closetimer);
		closetimer = null;
	}
}

jQuery(document).ready(function()
{	
	jQuery('#jstomimenu > li').bind('mouseover', js_open);
	jQuery('#jstomimenu > li').bind('mouseout',  js_timer);
});

document.onclick = js_close;