function isNumberKey(evt)
      {
         var charCode = (evt.which) ? evt.which : event.keyCode
         if (charCode > 31 && (charCode < 48 || charCode > 57))
            return false;

         return true;
      }


function CheckForm(formname,fields) {
//	alert (document.Registration.Title.selected);
	var Poruka ="Ovo polje ne moze da bude prazno";
	var  aTextPolja = fields.split(",") //new Array 
	for (a=0; a<aTextPolja.length; a++){
//		alert (document.forms[formname].elements[aTextPolja[a]].name);
		if (document.forms[formname].elements[aTextPolja[a]].value ==""){
			alert(Poruka);
			document.forms[formname].elements[aTextPolja[a]].focus();
			document.forms[formname].elements[aTextPolja[a]].style.backgroundColor='yellow';
			return false;
		}
		else{
			document.forms[formname].elements[aTextPolja[a]].style.backgroundColor='white';
		}
	}
	return true;
}


function textCounter(field, countfield, maxlimit) {
if (field.value.length > maxlimit) // if too long...trim it!
field.value = field.value.substring(0, maxlimit);
// otherwise, update 'characters left' counter
else 
countfield.value = maxlimit - field.value.length;
}