function isLoginBoxEmpty(sObj,sMsgErr){
  var obj1 = document.getElementById(sObj + '_txtLogin');
  var obj2 = document.getElementById(sObj + '_txtPwd');  
  
  if ((obj1.value == "") || (obj2.value == "") ){
		var obj_lbl = document.getElementById(sObj + '_lblErr');
    obj_lbl.innerHTML = sMsgErr;
		return false;
	}
	else{
		return true;		
	}	
}