/*
========================================
 Validator Script
 License : Freeware (Enjoy it!)
 (c)2004 Maurizio Giunti
========================================
LEAVE THESE NOTES PLEASE - delete the comments if you want 
*/

function isBlank(str) {
 for(var i=0;i<str.length;i++) {
  var c=str.charAt(i);
  if((c!=' ') && (c!='\n') && (c!='\t')) return false;
 }
 return true;
}

function isInteger(str) {
 var valid="0123456789+-";
 for(var i=0;i<str.length;i++) {
   if(valid.lastIndexOf(str.charAt(i))<0) {
     return false;
   }
 }
 return true;
}


function isEmail(str) {
  var pat=str.lastIndexOf('@');
  var ppt=str.lastIndexOf('.');
  if(pat>=0 && pat<ppt) {
            return true;
  }
  return false;
}