note Biker <P> I'm not sure if it's just in your example code, but please take the habit of not using <code>$a</code> and <code>$b</code> as variable names unless you're building a sort routine. <BR> <BR> I learnt it 'the hard way' in [id://148176|this thread]. <HR> Everything went worng, just as foreseen. </P> 159144 159144