// JavaScript Document
function echeck(str) 
{
	var at="@";
	var dot=".";
	var lat=str.indexOf(at);
	var lstr=str.length;
	var ldot=str.indexOf(dot);
	
	if (str.indexOf(at)==-1)
	{
		alert("Invalid E-mail ID");
		return false;
	}
	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr)
	{
		alert("Invalid E-mail ID");
		return false;
	}
	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr)
	{
		alert("Invalid E-mail ID");
		return false;
	}
	if (str.indexOf(at,(lat+1))!=-1)
	{
		alert("Invalid E-mail ID");
		return false;
	}
	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot)
	{
		alert("Invalid E-mail ID");
		return false;
	}
	if (str.indexOf(dot,(lat+2))==-1)
	{
		alert("Invalid E-mail ID");
		return false;
	}
	if (str.indexOf(" ")!=-1)
	{
		alert("Invalid E-mail ID");
		return false;
	}
	return true;
}

/* This script and many more are available free online at
The JavaScript Source!! http://javascript.internet.com
Copyright 1999 Idocs, Inc. http://www.idocs.com
Distribute this script freely but keep this notice in place */

function numbersonly(myfield, e, dec) {
  var key;
  var keychar;

  if (window.event)
    key = window.event.keyCode;
  else if (e)
    key = e.which;
  else
    return true;
  keychar = String.fromCharCode(key);

  // control keys
  if ((key==null) || (key==0) || (key==8) || (key==9) || (key==13) || (key==27) )
    return true;

  // numbers
  else if ((("0123456789").indexOf(keychar) > -1))
    return true;

  // decimal point jump
  else if (dec && (keychar == ".")) {
    myfield.form.elements[dec].focus();
    return false;
  } else
    return false;
}