function chkCounter(){
   //alert(document.getElementById('message').value.length);
   document.getElementById('counter').value = 160 - document.getElementById('message').value.length;
   if(document.getElementById('message').value.length > 160){
      alert('Maximum Reached');
      temp = document.getElementById('message').value;
      //tempLen = document.getElementById('message').value.length - 1;
      temp = temp.substring(0,160);
      //alert(temp);
      document.getElementById('message').value = temp;
      document.getElementById('counter').value = document.getElementById('message').value.length;
   }
}