function clearName(which, obj)
{
  if (obj.value==which)
  {
   obj.focus();
   obj.value="";
  }
}

function clearEmail()
{
 if (document.forms[0].email.value=="example@domain.com")
 {
  document.forms[0].email.value="";
 }
}

function useName(obj, check)
{
 if (obj.value=="")
 {
  obj.value=check;
 }
}
function useEmail()
{
 if (document.forms[0].email.value=="")
 {
  document.forms[0].email.value="example@domain.com";
 }
}

//FORM VALIDATION

function checkForm(form)
{
 with (form)
 {
  if (first.value=="")
  {
   	alert("You must enter your first name.");
        document.forms[0].first.focus();
   	return false;
  }
  else if (last.value=="")
  {
   	alert("You must enter your last name.");
        document.forms[0].last.focus();
   	return false;
  }
  else if ((email.value=="") || (email.value.indexOf("@")==-1) || (email.value.indexOf(" ")!=-1) || (email.value=="example@domain.com"))
  {
       alert("Invalid E-Mail address.");
        document.forms[0].email.focus();
   	return false;
  }
    else if (subject.value=="")
  {
   	alert("You must enter a subject");
        document.forms[0].subject.focus();
   	return false;
  }
  else if (comment.value=="")
  {
   	alert("Please enter a comment.");
	document.forms[0].comment.focus();
   	return false;
  }
  else
  {
	return true;
  }
 }
}