// JavaScript Document
function headMenuSetBg(y){
	document.getElementById('head_menu_td').style.backgroundPosition = '0px ' + y + 'px';
}

function mainMenuSetBg(y){
	document.getElementById('main_menu_div').style.backgroundPosition = '0px ' + y + 'px';
}

function footerMenuSetBg(y){
	document.getElementById('footer_menu_div').style.backgroundPosition = '0px ' + y + 'px';
}