// Code obtained from http://WillMaster.com/
//
// Each required form field can be checked with JavaScript. Here are 
//    the function names for the different kinds of checks:
//
//       1. WithoutContent() -- check if the text, textarea, password, 
//              or file fields has no content.
//       2. NoneWithContent() -- check if none of the set of text, 
//              textarea, password, or file fields have content. 
//              (Set: More than one with the same field name.)
//
//       3. NoneWithCheck() -- check if none of the set of radio buttons 
//              or checkboxes are checked. (Set: More than one with the 
//              same field name.)
//       4. WithoutCheck() -- check if the single radio button or checkbox 
//              is unchecked.
//
//       5. WithoutSelectionValue() -- check if selected drop-down list or 
//              select box entries have no value.
//
//
// The format for using the above functions is
//             if(       WithoutContent([FORMFIELDVALUE])) [ERRORMESSAGE]
//             if(      NoneWithContent([FORMFIELD])     ) [ERRORMESSAGE]
//             if(        NoneWithCheck([FORMFIELD])     ) [ERRORMESSAGE]
//             if(         WithoutCheck([FORMFIELD])     ) [ERRORMESSAGE]
//             if(WithoutSelectionValue([FORMFIELD])     ) [ERRORMESSAGE]
//
// The if(...) part and the error message part may be on separate lines, like
//             if(WithoutContent([FORMFIELDVALUE]))
//                [ERRORMESSAGE]
//             if(NoneWithContent([FORMFIELD]))
//                [ERRORMESSAGE]
//             if(NoneWithCheck([FORMFIELD]))
//                [ERRORMESSAGE]
//             if(WithoutCheck([FORMFIELD]))
//                [ERRORMESSAGE]
//             if(WithoutSelectionValue([FORMFIELD]))
//                [ERRORMESSAGE]
//
//
//      FORMFIELD -- The format for specifying a "form field" is 
//                         document.[FORMNAME].[FIELDNAME]
// FORMFIELDVALUE -- The format for specifying a "form field value" is 
//                         document.[FORMNAME].[FIELDNAME].value
//   ERRORMESSAGE -- The format for specifying an "error message" is
//                         { errormessage += "\n\n[MESSAGE]"; }
//                   If the message itself contains quotation marks, 
//                      they must be preceded with a back slash. 
//                      Example: \"
//
//
//      FORMNAME -- The name assigned to the form in the <FORM... tag. 
//     FIELDNAME -- The field name being checked.
// 
//
// For use with this JavaScript, the only non-alphanumeric character a 
//    fieldname may have is the underscore. Replace any hyphens, colons, 
//    spaces, or other non-alphanumeric characters in your field names 
//    with an underscore character.
//
//
// Put field checks into the function CheckRequiredFields(), in the order 
//    you want the fields checked.
//

function trimAll(sString)
{
while (sString.substring(0,1) == ' ')
{
sString = sString.substring(1, sString.length);
}
while (sString.substring(sString.length-1, sString.length) == ' ')
{
sString = sString.substring(0,sString.length-1);
}
return sString;
}


function WithoutContent(ss) {
	var x;
	x=trimAll(ss);
if(x.length > 0) { return false; }
return true;
}

function NoneWithContent(ss) {
for(var i = 0; i < ss.length; i++) {
	if(ss[i].value.length > 0) { return false; }
	}
return true;
}

function NoneWithCheck(ss) {
for(var i = 0; i < ss.length; i++) {
	if(ss[i].checked) { return false; }
	}
return true;
}

function WithoutCheck(ss) {
if(ss.checked) { return false; }
return true;
}

function WithoutSelectionValue(ss) {
for(var i = 0; i < ss.length; i++) {
	if(ss[i].selected) {
		if(ss[i].value.length) { return false; }
		}
	}
return true;
}


function CheckRequiredFields(thisform) {
var errormessage = new String();
// Put field checks below this point.

if(WithoutContent(thisform.fname.value))
	{ errormessage += "Please fill your name"; }
	

//if(WithoutContent(thisform.address.value))
	//{ errormessage += "\n\nPlease fill your address"; }
	
if(WithoutContent(thisform.phone.value))
	{ errormessage += "\n\nPlease fill your phone"; }
	
if(WithoutContent(thisform.mail.value))
	{ errormessage += "\n\nPlease fill your mail"; }

//if(WithoutContent(thisform.comments.value))
	//{ errormessage += "\n\nPlease fill your comments"; }

// Put field checks above this point.
if(errormessage.length > 0) {
	alert(errormessage);
	return false;
}
return true;
} // end of function CheckRequiredFields()