StrToken/@Word in JavaScript

function strToken( string, separator, position ){
    //If the string doesn't contain the separator, return 
    //empty string
    if( string.indexOf( separator ) == -1 ){ return ''; }

    var arr = string.split( separator );

    //If the position is larger than the number of elements,
    //return empty string
    if( position > arr.length ){ return ''; }

    //Return found item
    return arr[ position - 1 ];
}

Tested in IE6/FF2