var Across2 = {

	activeMenu : false,

	settMenuAnimation : function ()
	{
		var items = $('header-menu').getElementsByTagName('span');

		for (var i=0;i<items.length;i++)
		{
			$(items[i]).onmouseover = function () 
			{
				Across2.hideActiveMenu( this.id );
				Across2.showActiveMenu( this.id );
			}
		}
	},

	hideActiveMenu : function (item)
	{
		if (Across2.activeMenu == false)
		{
			return false;
		}

		$(Across2.activeMenu + '-items').style.display = 'none';
	},

	showActiveMenu : function (item)
	{
		if ( ($(item + '-items')))
		{
			$(item + '-items').style.display = 'block';
			Across2.activeMenu = item;
		}
	}
};

Event.observe(window, 'load', function () {
    Across2.settMenuAnimation();
});

function isNumberKeyInt(evt) {
	var charCode = (evt.which) ? evt.which : event.keyCode
    if (charCode > 31 && (charCode < 48 || charCode > 57)) {
        return false;
    }
    else {
		return true;
    }
}