function _volume_preload ()
{
	but_home_off=new Image();
	but_home_off.src = "templates/balcenter/images/menuMain.gif";
	but_home_on=new Image();
	but_home_on.src = "templates/balcenter/images/menuMain_sel.gif";
	but_news_off=new Image();
	but_news_off.src = "templates/balcenter/images/menuNews.gif";
	but_news_on=new Image();
	but_news_on.src = "templates/balcenter/images/menuNews_sel.gif";
	but_about_off=new Image();
	but_about_off.src = "templates/balcenter/images/menuAboutUs.gif";
	but_about_on=new Image();
	but_about_on.src = "templates/balcenter/images/menuAboutUs_sel.gif";
	but_delivery_off=new Image();
	but_delivery_off.src = "templates/balcenter/images/menuDelivery.gif";
	but_delivery_on=new Image();
	but_delivery_on.src = "templates/balcenter/images/menuDelivery_sel.gif";
	but_contact_off=new Image();
	but_contact_off.src = "templates/balcenter/images/menuContact.gif";
	but_contact_on=new Image();
	but_contact_on.src = "templates/balcenter/images/menuContact_sel.gif";
	but_catalogue_off=new Image();
	but_catalogue_off.src = "templates/balcenter/images/menuCatalogue.gif";
	but_catalogue_on=new Image();
	but_catalogue_on.src = "templates/balcenter/images/menuCatalogue_sel.gif";
}

function _on (img_id)
{
		if (document.all)
		{
			
			eval ('document["' + img_id + '"].src = ' + img_id + '_on.src;');
		} 
		else 
		{
			eval ('document.images["' + img_id + '"].src = ' + img_id + '_on.src;');
		}
}

function _off (img_id)
{
		if (document.all)
		{
			eval ('document["' + img_id + '"].src = ' + img_id + '_off.src;');
		} 
		else 
		{
			eval ('document.images["' + img_id + '"].src = ' + img_id + '_off.src;');
		}
}

_volume_preload ();