function markaChng(val)
{
var m0="<option value='' selected>-</option>";
var m1="<option value='1' >Michelin</option>";
var m12="<option value='12' >Fulda</option>";
var m2="<option value='2' >Kormoran</option>";
var m3="<option value='3' >Sava</option>";
var m4="<option value='4' >GoodYear</option>";
var m5="<option value='5' >Toyo</option>";
var m6="<option value='6' >Lassa</option>";
var m7="<option value='7' >Dunlop</option>";
var m8="<option value='8' >Hankook</option>";
var m9="<option value='9' >Recamic</option>";
var m10="<option value='10' >NewLife</option>";
var m11="<option value='11' >Nokian</option>";
if (val=="typeshin") {
document.getElementById('marka1').innerHTML="<select name='ma' class='textarea_big'>"+m0+"</select>";
}
if (val==1) {
document.getElementById('marka1').innerHTML="<select name='ma' class='textarea_big'>"+m0+m1+m12+m2+m11+m4+m3+m7+m8+m5+m6+"</select>";
}
if (val==2) {
document.getElementById('marka1').innerHTML="<select name='ma' class='textarea_big'>"+m0+m9+m10+"</select>";
}
}