/*******************************************************
SINGLE-SELECT CHECKBOXES
This gives checkboxes the "one-at-a-time" functionality of radio buttons.
*******************************************************/
function radioButton(formName)
{
	this.formName=(formName) ? formName:0;
	
	this.select=function(what)
	{
		if (document.forms && document.getElementsByTagName)
		{
			var raFields=eval('document.forms["'+this.formName+'"].getElementsByTagName("input");');

			var raFieldsLen=raFields.length;
			for (i=0; i<raFieldsLen; i++)
			{
				if (raFields[i].getAttribute("type").toLowerCase() == "checkbox") raFields[i].checked=false;
				what.checked=true;
				document.select_contact.submit();
			}
		}
	}
}