function CheckLogin(theForm,uPrompt,pPrompt){
 if (uPrompt) {
  BadUsername = (theForm.username.value==uPrompt);
 }else{
  BadUsername = (theForm.username.value=="");
 }

 if (pPrompt) {
  BadPass = (theForm.password.value==pPrompt);
 }else{
  BadPass = (theForm.password.value=="");
 }
 
 if (BadUsername){
  alert("Please enter your username.");
  theForm.username.focus();
  return false;
 }

 if (BadPass){
  alert("Please enter your password.");
  theForm.password.focus();   
  return false;
 }
  
 return true;
}