Problème de liste

script language=javascript>
cols = new Array();
cols[2] = new Array();
cols[2][1] = new Array();
cols[2][1][0] = document.createElement("option");
cols[2][1][0].value = "*";
cols[2][1][0].text = "*";
cols[2][1][1] = document.createElement("option");
cols[2][1][1].value = "14";
cols[2][1][1].text = " SERIE 3";
cols[2][2] = new Array();
cols[2][2][0] = document.createElement("option");
cols[2][2][0].value = "*";
cols[2][2][0].text = "*";
cols[2][2][1] = document.createElement("option");
cols[2][2][1].value = "28";
cols[2][2][1].text = " BERLINGO";
cols[2][2][2] = document.createElement("option");
cols[2][2][2].value = "31";
cols[2][2][2].text = " C3";
cols[2][2][3] = document.createElement("option");
cols[2][2][3].value = "34";
cols[2][2][3].text = " C5";
cols[2][2][4] = document.createElement("option");
cols[2][2][4].value = "37";
cols[2][2][4].text = " PICASSO";
cols[2][2][5] = document.createElement("option");
cols[2][2][5].value = "225";
cols[2][2][5].text = "JUMPY";
cols[2][2][6] = document.createElement("option");
cols[2][2][6].value = "228";
cols[2][2][6].text = "XANTIA";
cols[2][2][7] = document.createElement("option");
cols[2][2][7].value = "226";
cols[2][2][7].text = "XSARA";
cols[2][2][8] = document.createElement("option");
cols[2][2][8].value = "236";
cols[2][2][8].text = "ZX";
function Build_List(list)
{
nblist = list.id.substr(list.id.length-1,1);
++nblist;
newlist = document.getElementById("list"+nblist);
newlist.length=0;
maxi = cols[nblist][list.selectedIndex].length;
for(i=0;i<maxi;i++) { 
newlist.add(cols[nblist][list.selectedIndex][i]);
 } 
newlist.change;
}
</script>

et plus loin

<td>
<div align="left">
<select name="marquefind" id="list1" tabindex="1" size="1" style="width:120 " onchange="Build_List(this);">
<option value="*">- - -</option><option value="BMW">BMW</option><option value="CITROEN">CITROEN</option><option value="FIAT">FIAT</option><option value="FORD">FORD</option><option value="MERCEDES">MERCEDES</option><option value="OPEL">OPEL</option><option value="PEUGEOT">PEUGEOT</option><option value="RENAULT">RENAULT</option><option value="VOLKSWAGEN">VOLKSWAGEN</option>					  </select>
</div></td>			
<td><div align="left">MODELE</font></div></td>
<td><div align="left">
   <select name="modelfind" id="list2" tabindex="2"  size="1" style="width:120 " >
      <option value="*">*</option>
   </select>
</div></td>			
					   		

merci