function CheckEmailField(theField,alertMsg) {


    if (theField.value == "" ) {


        alert(alertMsg)


        theField.focus();


        return 0;


    }


    if (theField.value.indexOf ('@',0) == -1 ||


        theField.value.indexOf ('.',0) == -1) {


        alert("An Email field requires a \"@\" and a \".\" to be used. \n Please re-enter the Email Address.")


        theField.select();


        theField.focus();


        return 0;


    }


    return 1;


}


function CheckPhoneField(theField,alertMsg) {
    if (theField.value == "" ) {
        alert(alertMsg)
        theField.focus();
        return 0;
   }
    return 1;
}
function CheckForm(theForm) {

	if (!CheckPhoneField(theForm.firstname,"Please enter your first name.")) {
        return false;
    }
	if (!CheckPhoneField(theForm.lastname,"Please enter your last name.")) {
        return false;
    }
    if (!CheckEmailField(theForm.emailfield,"Please enter your email address.")) {
        return false;
    }
    if (!CheckPhoneField(theForm.msgSub,"Please enter your subject.")) {
        return false;
    }
	    return true;
}