Code:
function agregar_row(){
            for (i=0; i<10; i++){
                row="row/" . i;
                if (document.getElementById(row).style.display=='none'){
                    document.getElementById(row).style.display='';
                    i=11;
                }
            }
}
This function is intended to make visible a row, just one by each time the function is called.

the way im invoking "(row)" is wrong, i think...