var checkedLimit = 1;
var noFreeCEChecked = true;

function checkform(form) {
	var numChecked = 0;
	// Step through the form elements 
	for( var i = 0; i < form.elements.length; i++ ) {
		if (form.elements[i].type == "checkbox" ) {
			if (form.elements[i].checked == true) {
				numChecked++;
			}
		}
	}
		
	if (numChecked < checkedLimit) {
    	alert( "Please choose at least one newsletter to sign up for." );
    	return false ;
  	}
	return true ;
}