Removing leading zeros

Hi All

I have a Java function which removes leading zeros
from a given string value and returns me the number.

Eg. 

000125000 -- 125000
0012300  -- 12300
01234 -- 1234

public static String removeLeadingZeros(String str) 
        {    
                if (str == null) 
                {        
                        return null;    
                }   
                char[] chars = str.toCharArray();
                int index = 0;
                for (; index < str.length(); index++) 
                {       
                        if (chars[index] != '0') 
                        {            
                                break;       
                        }    
                }    
                return (index == 0) ? str : str.substring(index);
        }

Can someone help me build something like this in XSL.
I dont mean you to write for the script, but atleast
help me in taking thru what I have to do to get to
this.

Appreciate your time.

Thanks
Nischal 


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