var submitcount=0;

function reset() {

}


function checkLogin() {                       
if ( (document.loginform.username.value=="") ) 
   {
   alert("Please enter your username.");
   return false;
   }

else 
   {
   if (submitcount == 0)
      {
      submitcount++;
      return true;
      }
   else 
      {
      alert("This form has already been submitted.  Thanks!");
      return false;
      }
   }
}


function filterInput (input) {
s = input.value;
filteredValues = "<>~#^|}{,.:''()@&*+=[]\/%_";     // Characters stripped out
var i;
var returnString = "";
for (i = 0; i < s.length; i++) {  // Search string, append to unfiltered values to returnString
var c = s.charAt(i);
if (filteredValues.indexOf(c) == -1) returnString += c;
}
input.value = returnString;
}


function charCount(field, textmax) {
if (field.value.length > textmax) // if too long...trim it!
field.value = field.value.substring(0, textmax);
}