// JavaScript Document
<!--
function toggle(submenu,imgButton) {
	
	if (document.getElementById(submenu).style.display == 'none') {
   		document.getElementById(submenu).style.display = 'block';
		document.getElementById(imgButton).src = 'http://www.twinaudiovideo.com/images/leftmenu/button_minus.jpg';
   	} else if (document.getElementById(submenu).style.display == 'block') {
   		document.getElementById(submenu).style.display = 'none';
		document.getElementById(imgButton).src = 'http://www.twinaudiovideo.com/images/leftmenu/button_plus.jpg';
	}
}
//-->