function myFunc()
        {
        var total = 0;
        var locationList= document.getElementById("ctl00$ContentPlaceHolder1$lstLocation");
        for( i= 0; i< locationList.options.length; i++ )
        {
            if (locationList.options[i].selected) 
            {
                total = total +1;
                
                if (total >3)
                 {                                                                                                                                                                                                                       
                    alert("you had reached the limit");
                    return false;
                 }
            }
            
        }
     }
     
     function myFunc10()
        {
            //var e=document.getElementById("ctl00_ContentPlaceHolder1_ddlCity");
            //window.alert(e.value); 
            return false;
        }
     
     function validate_city_Advanced(src,args)
        {
            if(args.Value == "Select City")  
                args.IsValid=false;
            else
                args.IsValid=true;
        }