// based on the json response, add or remove vars from the var list
function processVars(response) {
	if (response.varChanged == 'True') {
		
		new Ajax.Request('/vars/list', 
	    {
		  method: 'get',

		  onSuccess: function(transport) {
			$$('#varTable tr').each(function (item) {
				Element.remove(item);
			});
			Element.insert($('varTable'), { bottom: transport.responseText });

			$$('#varTable td','li.expr','li.result').each(function (item) {
				if (!item.hasClassName("breaks_added")) {
					item.innerHTML = item.innerHTML.split("").join("<wbr/>") ;
					item.addClassName("breaks_added");
				}
			});
		  },

		  onFailure: function(transport) {
		  }
		});
	}
}