function on(sId, sName)
{
	oTd = document.getElementById('mainMenu'+sId);
	if(oTd)
	{
		oTd.className = sName;
	}
}

function off(sId, sName)
{
	oTd = document.getElementById('mainMenu'+sId);
	if(oTd)
	{
		oTd.className = sName;
	}
}

function cheked(id, path)
{
	image = document.getElementById(id);
	if(image)
	{
		image.src= path+'bottom.jpg';
	}
}

function uncheked(id, path)
{
	image = document.getElementById(id);
	if(image)
	{
		image.src= path+'bottom_w.jpg';
	}
}