Function to validate Email Address

function Emailchk(email)
{

var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
if(reg.test(email) == false)
{

return false;
}
else
{
return true;
}

}

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