function validation()
{
if(document.getElementById('nemail').value)
{
var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
var address = document.getElementById('nemail').value;
if(reg.test(address) == false)
{
alert('Invalid Email Address');
document.forms["myform"]["nemail"].focus();
return false;
}
}
else
{
alert('Enter Email Address');
document.forms["myform"]["nemail"].focus();
return true;
}
}
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