function ChangeDiv1(Exp) {
var obj1 = eval(Exp)
	if(obj1.className == 'off')
		{
			document[Exp+"i"].src='images/open.gif';
			obj1.className='on';
		}
	else
		{
			obj1.className='off';
			document[Exp+"i"].src='images/close.gif';
		}
}