// [dFilter] - A Numerical Input Mask for JavaScript

// Written By Dwayne Forehand - March 27th, 2003

// Please reuse & redistribute while keeping this notice.



var dFilterStep



function dFilterStrip (dFilterTemp, dFilterMask)

{

    dFilterMask = replace(dFilterMask,'#','');

    for (dFilterStep = 0; dFilterStep < dFilterMask.length++; dFilterStep++)

                {

                    dFilterTemp = replace(dFilterTemp,dFilterMask.substring(dFilterStep,dFilterStep+1),'');

                }

                return dFilterTemp;

}



function dFilterMax (dFilterMask)

{

                 dFilterTemp = dFilterMask;

    for (dFilterStep = 0; dFilterStep < (dFilterMask.length+1); dFilterStep++)

                {

                                 if (dFilterMask.charAt(dFilterStep)!='#')

                                {

                        dFilterTemp = replace(dFilterTemp,dFilterMask.charAt(dFilterStep),'');

                                }

                }

                return dFilterTemp.length;

}



function dFilter (key, textbox, dFilterMask)

{

                dFilterNum = dFilterStrip(textbox.value, dFilterMask);



                if (key==9)

                {

                    return true;

                }

                else if (key==8&&dFilterNum.length!=0)

                {

                                  dFilterNum = dFilterNum.substring(0,dFilterNum.length-1);

                }

           else if ( ((key>47&&key<58)||(key>95&&key<106)) && dFilterNum.length<dFilterMax(dFilterMask) )

                {

        dFilterNum=dFilterNum+String.fromCharCode(key);

                }



                var dFilterFinal='';

    for (dFilterStep = 0; dFilterStep < dFilterMask.length; dFilterStep++)

                {

        if (dFilterMask.charAt(dFilterStep)=='#')

                                {

                                          if (dFilterNum.length!=0)

                                          {

                                        dFilterFinal = dFilterFinal + dFilterNum.charAt(0);

                                              dFilterNum = dFilterNum.substring(1,dFilterNum.length);

                                          }

                                    else

                                    {

                                        dFilterFinal = dFilterFinal + "";

                                    }

                                }

                                 else if (dFilterMask.charAt(dFilterStep)!='#')

                                {

                                    dFilterFinal = dFilterFinal + dFilterMask.charAt(dFilterStep);

                                }

//                    dFilterTemp = replace(dFilterTemp,dFilterMask.substring(dFilterStep,dFilterStep+1),'');

                }





                textbox.value = dFilterFinal;

    return false;

}



function replace(fullString,text,by) {

// Replaces text with by in string

    var strLength = fullString.length, txtLength = text.length;

    if ((strLength == 0) || (txtLength == 0)) return fullString;



    var i = fullString.indexOf(text);

    if ((!i) && (text != fullString.substring(0,txtLength))) return fullString;

    if (i == -1) return fullString;



    var newstr = fullString.substring(0,i) + by;



    if (i+txtLength < strLength)

        newstr += replace(fullString.substring(i+txtLength,strLength),text,by);



    return newstr;

}



function currencyFormat(fld, milSep, decSep, e) {

    var sep = 0;

    var key = '';

    var i = j = 0;

    var len = len2 = 0;

    var strCheck = '0123456789';

    var aux = aux2 = '';

    var whichCode = (window.Event) ? e.which : e.keyCode;

    if (whichCode == 13) return true;  // Enter

    key = String.fromCharCode(whichCode);  // Get key value from key code

    if (strCheck.indexOf(key) == -1) return false;  // Not a valid key

    len = fld.value.length;

    for(i = 0; i < len; i++)

    if ((fld.value.charAt(i) != '0') && (fld.value.charAt(i) != decSep)) break;

    aux = '';

    for(; i < len; i++)

    if (strCheck.indexOf(fld.value.charAt(i))!=-1) aux += fld.value.charAt(i);

    aux += key;

    len = aux.length;

    if (len == 0) fld.value = '';

    if (len == 1) fld.value = '0'+ decSep + '0' + aux;

    if (len == 2) fld.value = '0'+ decSep + aux;

    if (len > 2) {

    aux2 = '';

    for (j = 0, i = len - 3; i >= 0; i--) {

    if (j == 3) {

    aux2 += milSep;

    j = 0;

    }

    aux2 += aux.charAt(i);

    j++;

    }

    fld.value = '';

    len2 = aux2.length;

    for (i = len2 - 1; i >= 0; i--)

    fld.value += aux2.charAt(i);

    fld.value += decSep + aux.substr(len - 2, len);

    }

    return false;

}