javascript email validation not working

[physician]

I am validating my form using javascript validation as whole validation is working fine but email validation is not working. My form code is as follows\[code\]<form method="post" action="contact.php" name="myForm" onsubmit="return validateForm()"><h3>To know more contact us today.</h3> <table> <tr> <td>Name: <br /> <input id="name" name="name" type="text" /> </td> </tr> <tr> <td>Contact No: <br /> <input id="contact" name="contact" type="text" /> </td> </tr> <tr> <td>Email: <br /> <input id="email" type="text" name="email" /> </td> </tr> <tr> <td>Address: <br /> <textarea cols="34" id="address" name="address" type="text"></textarea> </td> </tr> <tr> <td> <input type="submit" value="http://stackoverflow.com/questions/14433662/Submit" /> </td> </tr> </table></form>\[/code\]and my javascript code is as follows\[code\] <script type="text/javascript"> function validateEmail() { var emailID = document.["myForm"]["email"].value; atpos = emailID.indexOf("@"); dotpos = emailID.lastIndexOf("."); if (atpos < 1 || (dotpos - atpos < 2)) { alert("Please enter correct email ID") document.myForm.email.focus(); return false; } return (true); } function validateForm() { var x = document.forms["myForm"]["name"].value; if (x == null || x == "") { alert("First name must be filled"); return false; } var x = document.forms["myForm"]["contact"].value; if (x == null || x == "" || isNaN(document.myForm.contact.value) || document.myForm.contact.value.length != 10) { alert("Contact Number Must be 10 Digits"); return false; } var x = document.forms["myForm"]["email"].value; if (x == null || x == "") { alert("Email is must"); return false; } else { var ret = validateEmail(); if (ret == false) { return false; } } var x = document.forms["myForm"]["address"].value; if (x == null || x == "") { alert("Address cannot be empty"); return false; } return (true); } </script>\[/code\]