var subsmallclassid = new Array();

subsmallclassid[0] = new Array(1,7,'旅游咨询')

subsmallclassid[1] = new Array(2,14,'美食咨询')

subsmallclassid[2] = new Array(3,20,'酒店会议咨询')

function changesmallclassid(selectValue)
{
document.getElementById('smallclassid').length = 0;
document.getElementById('smallclassid').options[0] = new Option('-选择-','');
for (i=0; i<subsmallclassid.length; i++)
{
if (subsmallclassid[i][0] == selectValue)
{
document.getElementById('smallclassid').options[document.getElementById('smallclassid').length] = new Option(subsmallclassid[i][2], subsmallclassid[i][1]);
}
}
}
function changesmallerclassid(selectValue)
{
document.getElementById('smallerclassid').length = 0;
document.getElementById('smallerclassid').options[0] = new Option('-选择-','');
for (i=0; i<subsmallclassid.length; i++)
{
if (subsmallclassid[i][0] == selectValue)
{
	document.getElementById('smallerclassid').style.display='';
	document.getElementById('smallerclassid').options[document.getElementById('smallerclassid').length] = new Option(subsmallclassid[i][2], subsmallclassid[i][1]);
}
}
}


document.write ("<select name='classid' id='classid' style='width:120px' onChange='changesmallclassid(this.value)'>");
document.write ("<option value='' selected>-选择-</option>");

document.write ("<option value=1>旅游信息</option>");

document.write ("<option value=2>美食信息</option>");

document.write ("<option value=3>酒店会议</option>");

document.write ("</select>")

document.write ("  <select name='smallclassid' onChange='changesmallerclassid(this.value)' style='width:120px' id='smallclassid'>");
document.write ("<option value='' selected>-选择-</option>");
document.write ("</select>")
document.write ("  <select name='smallerclassid'  style='display:none;width:120px' id='smallerclassid'>");
document.write ("<option value='' selected>-选择-</option>");
document.write ("</select>")