function viewDiv(num)//(id)
{
	if(num != null)
		var num1 = num - 1;
	var obj = document.all.subMenu;
	var size = obj.length;
	for(i = 0; i < size; i++)
	{
		//y = i + 1;
		obj[i].style.display = 'none';
	}
	if(num != null)
	{
		obj[num1].style.display = 'block';
	}
}