/**
 * @author Tuan Anh
 * @copyright 2009
 */
var total=0;
function KeepCount(form,j,maxchoice,msg) {

var a=form['option_id[]'];
	total=0;
	for(var i=0; i < a.length; i++){
		if(a[i].checked){
			total =total +1;
			
		}
		if(total > maxchoice){
			alert(msg) ;
			a[j].checked = false ;
		return false;
		}
	}

}

function chkSelect(errsm) {

	if (total==0) {
		alert(errsm);
		return false;
	}
	return true;
}