/* **************************************************
 
 Allow radio buttons to be unchecked.
 Requires each radio to have a name and id.
 
************************************************** */

var checkedRadios = new Object();

function checkRadio(radioElement)
{
	if(checkedRadios[radioElement.name] == radioElement.id)
	{
		checkedRadios[radioElement.name] = false;
		radioElement.checked = false;
	}
	else
	{
		checkedRadios[radioElement.name] = radioElement.id;
		radioElement.checked = true;
	}
}