var curr_elem = 0;
function focusNext(form, evt) {
    evt = (evt) ? evt : event;
    var charCode = (evt.charCode) ? evt.charCode :
        ((evt.which) ? evt.which : evt.keyCode);
    if (charCode == 13) {
        //if (curr_elem == form.elements.length)
        //  curr_elem = 0;
        curr_elem++;
        form.elements[curr_elem].focus();
        //alert(form.elements[curr_element].type);
        if (form.elements[curr_elem].name == "add_order")
            return true;
        else
            return false;
    }
    return true;
}

function setCurrent(form, elem)
{
	for (i = 0; i < form.elements.length; i++)
	{
		if (form.elements[i] == elem)
			curr_elem = i;
	}
}