function setClass(id,id_child)  {
				if (document.getElementById(id_child).style.display == 'none') id.className = 'cash_h';
				else id.className = 'cash_h';
			}
			
			function switchDisplay(obj,id)  	{
				obj.className = 'cash_h'; 
				a = document.getElementById('div' + id).style.display;
				document.getElementById('div' + id).style.display = (a == 'block') ? 'none' : 'block';
				b = document.getElementById('col' + id).className;
				document.getElementById('col' + id).className = (b == 'expl_off') ? 'expl' : 'expl_off';
			}