var pics;
var objCount=0;

pics = new Array();

function preload(name, picname1, picname2)
{   
    pics[objCount] = new Array(2);
    pics[objCount][0] = name;
    pics[objCount][1] = new Image(); pics[objCount][1].src = picname1;
    pics[objCount][2] = new Image(); pics[objCount][2].src = picname2;
    objCount++;
}

function On(num)
{
	obj=document.getElementById('menu'+num+'-td');
	obj.className='on';
 	document.images[pics[num-1][0]].src = pics[num-1][2].src;
}

function Off(num)
{
	obj=document.getElementById('menu'+num+'-td');
	obj.className='off';
 	document.images[pics[num-1][0]].src = pics[num-1][1].src;
}

preload("menu1","/images/menu_1.gif","/images/menu_1_s.gif");
preload("menu2","/images/menu_2.gif","/images/menu_2_s.gif");
preload("menu3","/images/menu_3.gif","/images/menu_3_s.gif");
preload("menu4","/images/menu_4.gif","/images/menu_4_s.gif");
preload("menu5","/images/menu_5.gif","/images/menu_5_s.gif");
preload("menu6","/images/menu_6.gif","/images/menu_6_s.gif");


menu_line = new Image(); menu_line.src = '/images/menu_line_s.gif';