yol durumu kodu

<select onchange="if (this.options[this.selectedIndex].value != ' ') { window.open(this.options[this.selectedIndex].value,'_blank') }" size="1" name="select5" class="form">    <option value=" " selected>Ulaşım</option>    <option value=" ">---------------------</option>    <option value="http://www.dhmiata.gov.tr/arr.asp">AHv.-Geliş</option>    <option value="http://www.dhmiata.gov.tr/dep.asp">AHv.-Gidiş</option>    <option value="http://www.ibb.gov.tr/istanbultr/315/31508/index.htm">Banliyo</option>    <option value="http://www.ibb.gov.tr/istanbultr/315/31505/index.htm">Metro-Tram</option>    <option value="http://www.ido.com.tr">İDO</option>    <option value="http://www.ibb.gov.tr/istanbultr/315/31501/index.htm">İETT</option>    <option value="http://www.kgm.gov.tr">Karayolları</option>    <option value="http://www3.thy.com/troyaonline">THY Online</option>    </select><br>