function SubmitForm(f)
{
	var objCheckBoxes = eval('document.'+f.name+'.listing');
	var countCheckboxes = objCheckBoxes.length;
	var actionUrl = 'http://www.longislandcateringhalls.com/compare.aspx?l='
	var articleList = '';
	for(var i = 0; i < countCheckboxes; i++)
	{
	if (objCheckBoxes[i].checked)
			articleList += objCheckBoxes[i].value + ',';		
	}
	if (articleList == '')
	{
		alert("Please select halls to compare before continuing");
		return false;
	}
	articleList = articleList.substring(0,articleList.length-1);
	actionUrl = actionUrl + articleList;
	window.location.href = actionUrl;
	return false;
}