function UrlEncode(str)   
 {   
     return transform(str);   
 }   
   
 function transform(s)   
 {   
     var hex=''  
     var i,j,t   
       
         j=0   
         for (i=0; i<s.length; i++)   
         {   
             t = hexfromdec( s.charCodeAt(i) );   
             if (t=='25')   
             {   
                 t='';   
             }   
             hex += '%' + t;   
         }   
         return hex;   
     }   
       
     function hexfromdec(num) {   
             if (num > 65535) { return ("err!") }   
             first = Math.round(num/4096 - .5);   
             temp1 = num - first * 4096;   
             second = Math.round(temp1/256 -.5);   
             temp2 = temp1 - second * 256;   
             third = Math.round(temp2/16 - .5);   
             fourth = temp2 - third * 16;   
             return (""+getletter(third)+getletter(fourth));   
     }   
       
     function getletter(num) {   
             if (num < 10) {   
                     return num;   
             }   
             else {   
                 if (num == 10) { return "A" }   
                 if (num == 11) { return "B" }   
                 if (num == 12) { return "C" }   
                 if (num == 13) { return "D" }   
                 if (num == 14) { return "E" }   
                 if (num == 15) { return "F" }   
             }   
     }