<!-- Script by hscripts.com -->
<!-- Copyright of HIOXINDIA -->
<!-- More scripts @www.hscripts.com -->

<style type="text/css">
.txt{border:1px solid grey;width:150px;height:25px;font-size:12px;padding:5px;font-family:arial,verdana;}
.fnt{font-size:12px;font-family:arial,verdana;}
</style>

<script type="text/javascript">
var rarr = new Array("M",  "CM", "D", "CD", "CCC", "CC", "C", "XC", "L", "XL", "XXX", "XX", "X", "IX", "V", "IV", "III", "II", "I");
           var narr = new Array(1000,900,500,400,300,200,100,90,50,40,30,20,10,9,5,4,3,2,1); 
           var warr = new Array("CMCM",  "CMD",  "CMCD", "CMC", "DD", "DCD", "CDCD", "CDC", "CCCC", "XCXC",  "XCL", "XCXL", "XCX", "LL", "LXL", "XLXL", "XLX", "XXXX", "IXIX",  "IXV", "IXIV", "IXI", "IVIV", "IVI", "IIII");
           var carr= new Array("MDCCC", "MCD",  "MIII", "M",   "M",  "CM",  "DCCC", "D",   "CD",   "CLXXX", "CXL", "CIII", "C",   "C",  "XC",  "LXXX", "L",   "XL",   "XVIII", "XIV", "XIII", "X",   "VIII", "V",   "IV");
function convert_numeric()
{
           var rom = document.getElementById("roman").value;
           var roman = rom.replace(/ /g, "");
           roman = roman.toUpperCase();
           roman = roman.replace(/[^IVXLCDM]/g, "");
           document.getElementById("roman").value=roman;
           if (roman.length == 0)
           {
                 document.getElementById("res").innerHTML = "";
                 return;
           }
           var position = 0;
           var result = 0;
           var pp = -1;
           while(position < roman.length)
           {
               var p = getnextletter(roman, position);
               if (pp != 0)
               {
                 if ( narr[pp] < narr[p] )
                 {
                        document.getElementById("res").innerHTML = "Error. "+rarr[p]+" should not follow "+rarr[pp];
                        return;
                 }
               }
               if(p < 0)
                    return;
                    position += rarr[p].length;
                    result += narr[p];
                    pp = p;
            }
            document.getElementById("res").innerHTML =  result;
}
function getnextletter(roman, position)
{
       for (i=0; i<warr.length; i++)
       {
          if ( roman.indexOf(warr[i], position) == position )
          {
            document.getElementById("res").innerHTML = warr[i] + " is not correct replace with " + carr[i] + ".";
            return -1;
          }
       }
       for (i=0; i<rarr.length; i++)
       {
          if ( roman.indexOf(rarr[i], position) == position)
              return i;
       }
       document.getElementById("res").innerHTML = "invalid at " +position;
       return -1;
}
                   
</script>

<!-- Script by hscripts.com -->

<table>
<tr><td class="fnt">Roman Number:</td><td><input type="text"  class="txt" id="roman" value="" onkeyup="convert_numeric()"></td></tr>
<tr><td class="fnt">Numeric Value:</td><td class="fnt"><div id="res" style='border:1px solid grey;height:22px; padding: 2px; padding-left: 8px;'></div></td></tr>
<tr><td colspan=2><div align=center style="font-size: 10px; color:green;" id="dumdiv">
<a href="http://www.hscripts.com" id="dum" style="text-decoration:none; color: #dadada;">&copy;h</a>
</div></td></tr>
</table>