function checker() {
    if(document.thisForm.name.value=="") {
        alert("Please enter your Name");
        document.thisForm.name.focus();
        return false;
    } else if((document.thisForm.email.value.indexOf("@")==-1)||(document.thisForm.email.value.indexOf(".")==-1)) {
        alert ("Please enter your Email address")
        document.thisForm.email.focus();
        return false;
    }

  
    return true;

}