function emailval()
{
regex=/^[(a-z)(A-Z)(0-9)][(a-z)(A-Z)(0-9)(\_)(\-)(\.)]*\@[(a-z)(A-Z)(0-9)][(a-z)(A-Z)(0-9)(\_)(\-)]*\.[(a-z)(A-Z)(\.)]+$/
if(regex.test(email1))
        return true;
else
        return false;
}