function displayDiv(div0,div1)
{
	
	var field0 = document.getElementById(div0);
	var field1 = document.getElementById(div1);
	
	
	if (field0.style.display==''){field0.style.display='block';}
		
	if (field0.style.display=='block'){
		field0.style.visibility='hidden';
		field0.style.display='none';
		field1.style.visibility='visible';
		field1.style.display='block';
		return;	
	}
		
	if (field0.style.display=='none'){
		field1.style.visibility='hidden';
		field1.style.display='none';
		field0.style.visibility='visible';
		field0.style.display='block';
		return;
	}
}