function openDiv(divName)
{
	if(document.layers) 
		document.layers[divName].visibility='visible';
	else if(document.all)
		document.all(divName).style.visibility='visible';		
	else if(document.getElementById)
		document.getElementById(divName).style.visibility='visible';
}
function closeDiv(divName)
{
	if(document.layers) 
		document.layers[divName].visibility='hidden';
	else if(document.all)
		document.all(divName).style.visibility='hidden';		
	else if(document.getElementById)
		document.getElementById(divName).style.visibility='hidden';
}
function pollValidator(theForm)
{
	var theOption = -1;
	for (i=0; i<theForm.user_choice.length; i++) 
	{
		if (theForm.user_choice[i].checked)
		{
			theOption = i;
		}
	}
	if (theOption == -1) 
	{
		alert("Please choose an option before submitting the form.");
		return false;
	}
	return true;
}

function popUp(theUrl,theHeight,theWidth) 
{
	window.open(theUrl,"win","status=no,height="+theHeight+",width="+theWidth+",scrollbars=yes,resizable=yes");
}

function popUpToolbar(theUrl,theHeight,theWidth) 
{
	window.open(theUrl,"win","status=no,height="+theHeight+",width="+theWidth+",scrollbars=yes,resizable=yes,toolbar=yes");
}