Go4Expert - HELP in analyzing an original script

hi ya all,

i am looking for analyzing this folowing script, it is not a familiar language, but a one that developed originally in a software development firm:

does anybody understand what the following script doing?

Code:

function walla.text(a,b) {

    local cntr;

    local x,y;

    local c;

    local d;             

                    

    for(cntr=0;cntr<b.length;cntr++) {

        x=0; y=0; c='`;

        

        while((x=a.indexOf(b[cntr].f,y))>=0) {



            d=b[cntr].r;

            if (x==0) c=c|b[cntr].b|d|b[cntr].a;

                            else c=c|a.substring(y,x)|b[cntr].b|d|b[cntr].a;

            y=x+b[cntr].f.length;

            }

        a=c|a.substring(y,a.length);

        }

    return(a);

}



                                                

function walla.text.rule(rules,f,b,r,a) {

    rules.length=rules.length+0;

    rules[rules.length].f=f;

    rules[rules.length].b=b;

    rules[rules.length].r=r;

    rules[rules.length].a=a;

    rules.length++;

}

any help would be appreciated.

thanks