function validatemail()
{
if (document.mailform.name.value=="") {
alert("Please enter your name.");
document.mailform.name.focus()
return false	
}
if (document.mailform.day_phone_number.value=="") {
alert("Please enter your phone number.");
document.mailform.day_phone_number.focus()
return false	
}
if (document.mailform.SenderEmail.value=="") {
alert("Please enter your email address!");
document.mailform.SenderEmail.focus()
return false
}
if (document.mailform.SenderEmail.value.indexOf("@") == -1 || document.mailform.SenderEmail.value.indexOf(".") == -1)
 {
 alert("You do not have a valid email address.")
 document.mailform.SenderEmail.focus()
return false
}
return true
}