function formCheck() {

	  if (document.EnquiryForm.realname.value == "") {
       alert("Please enter your name");
       document.EnquiryForm.realname.focus();
       return false;
    }
    if (document.EnquiryForm.email.value == "") {
       alert("Please enter your email address");
       document.EnquiryForm.email.focus();
       return false;
    }
    if (document.EnquiryForm.email.value.indexOf("@") == -1) {
       alert("Please enter a valid email address (you have not entered an @ sign)");
       document.EnquiryForm.email.focus();
       return false;
    }

    if (document.EnquiryForm.email.value.indexOf(".") == -1) {
       alert("Please enter a valid email address (you have not entered a full stop anywhere)");
       document.EnquiryForm.email.focus();
       return false;
    }
}