if (l >= 1 && l < 10)
target.style.color = 'black';
if (l > 9 && l < 15)
target.style.color = 'blue';
http://selfhtml.teamone.de/javascript/sprache/operatoren.htm#rangfolge
if (l >= 1 && l < 10)
target.style.color = 'black';
if (l > 9 && l < 15)
target.style.color = 'blue';
http://selfhtml.teamone.de/javascript/sprache/operatoren.htm#rangfolge