/* http://javascript.internet.com/forms/limit-characters-and-words-entered.html*/

    /* For additional information about this JavaScript
and how to use it, see the "Displaying Number of Words
Typed Into Form Fields" article, linked from the archives
at from http://willmaster.com/possibilities/archives/
The above note and the copyright line must remain with
this JavaScript source code. Comments below this point
in the code may be removed if desired. */

var IE = (document.all) ? 1 : 0;
var DOM = 0; 
if (parseInt(navigator.appVersion) >=5) {DOM=1};

//////////////////////////////////////////////////////
//                                                  //
//  No modfications are required below this point.  //
//                                                  //
//////////////////////////////////////////////////////

var WordsMonitor = 0;
var MaxWords = parseInt(MaximumWords);
var MaxChars = parseInt(MaximumCharacters);
var textfield = 'document.' + FormName + '.' + TextFieldName + '.value';

function WordLengthCheck(s,l) {
WordsMonitor = 0;
var f = false;
var ts = new String();
for(var vi = 0; vi < s.length; vi++) {
	vs = s.substr(vi,1);
	if((vs >= 'A' && vs <= 'Z') || (vs >= 'a' && vs <= 'z') || (vs >= '0' && vs <= '9')) {
		if(f == false)	{
			f = true;
			WordsMonitor++;
			if((l > 0) && (WordsMonitor > l)) {
				s = s.substring(0,ts.length);
				vi = s.length;
				WordsMonitor--;
				}
			}
		}
	else { f = false; }
	ts += vs;
	}
return s;
} // function WordLengthCheck()

function CharLengthCheck(s,l) {
if(s.length > l) { s = s.substring(0,l); }
return s;
} // function CharLengthCheck()

function InputCharacterLengthCheck() {
if(MaxChars <= 0) { return; }
var currentstring = new String();
eval('currentstring = ' + textfield);
var currentlength = currentstring.length;
eval('currentstring = CharLengthCheck(' + textfield + ',' + MaxChars + ')');
if(CharactersLeftFieldName.length > 0) {
	var left = 0;
	eval('left = ' + MaxChars + ' - ' + textfield + '.length');
	if(left < 0) { left = 0; }
	eval('document.' + FormName + '.' + CharactersLeftFieldName + '.value = ' + left);
	if(currentstring.length < currentlength) { eval(textfield + ' = currentstring.substring(0)'); }
	}
if(CharactersTypedFieldName.length > 0) {
	eval('document.' + FormName + '.' + CharactersTypedFieldName + '.value = ' + textfield + '.length');
	if(currentstring.length < currentlength) { eval(textfield + ' = currentstring.substring(0)'); }
	}
} // function InputCharacterLengthCheck()

function InputWordLengthCheck() {
    if(MaxWords <= 0) { return; }
    var currentstring = new String();
    eval('currentstring = ' + textfield);
    var currentlength = currentstring.length;
    eval('currentstring = WordLengthCheck(' + textfield + ',' + MaxWords + ')');
    if (WordsLeftFieldName.length > 0) {
	    var left = MaxWords - WordsMonitor;
	    if(left < 0) { 
	        alert("Too many words.");
	        left = 0; 
	     }
	    //eval('document.' + FormName + '.' + WordsLeftFieldName + '.value = ' + left);
	    if (DOM) {
         var viewer=document.getElementById(WordsLeftFieldName);
         eval(viewer.innerHTML="Words left: " + left);
        }
        else if(IE) {
             document.all[WordsLeftFieldName].innerHTML="Words left: " + left;
        }

	if(currentstring.length < currentlength) { eval(textfield + ' = currentstring.substring(0)'); }
	}
    //if (WordsTypedFieldName.length > 0) {
	    //eval('document.' + FormName + '.' + WordsTypedFieldName + '.value = ' + WordsMonitor);
	//    if(currentstring.length < currentlength) { eval(textfield + ' = currentstring.substring(0)'); }
	//}
} // function InputWordLengthCheck()

function InputLengthCheck() {
//InputCharacterLengthCheck();
InputWordLengthCheck();
} // function InputLengthCheck()