var objCount=0;
var pics=new Array (); 

function preload(name, on, off)  
{     
  pics[objCount]=new Array(3);
  pics[objCount]['on']=new Image();
  pics[objCount]['on'].src=on;
  pics[objCount]['off']=new Image();
  pics[objCount]['off'].src=off;
  pics[objCount]['name']=name;
  objCount++;
}

function selectMenu(num)
{
	if (num >= 0 && num < pics.length)
	{
		pics[num]['name'] = name;
	}
}

function on(name) 
{
	for (i = 0; i < objCount; i++) 
	{
		if (document.images[pics[i]['name']] != null) 
		{
			if (name != pics[i]['name']) 
			{ 
				document.images[pics[i]['name']].src=pics[i]['on'].src;
			} 
			else 
			{
				document.images[pics[i]['name']].src=pics[i]['off'].src;
			}
		}
	}
}

function off() 
{
	for (i = 0; i < objCount; i++) 
	{
		if (document.images[pics[i]['name']] != null) 
		{
			document.images[pics[i]['name']].src=pics[i]['on'].src;
		}
	}
}

preload("link1", "/images/des/menu_02.gif", "/images/des/menus_02.gif");
preload("link2", "/images/des/menu_070.gif", "/images/des/menus_07.gif");
preload("link3", "/images/des/menu_100.gif", "/images/des/menus_10.gif");
preload("link4", "/images/des/menu_130.gif", "/images/des/menus_13.gif");
preload("link5", "/images/des/menu_160.gif", "/images/des/menus_16.gif");
preload("link6", "/images/des/menu_190.gif", "/images/des/menus_19.gif");
preload("link7", "/images/des/menu_220.gif", "/images/des/menus_22.gif");