function updateCity(response)
{
var el=document.getElementById("zcity");
el.options.length=0;
//add options to DOM
for(x in response.text)
{var opt = new Option(response.text[x],response.value[x],null,null);
if (ie) el.add(opt); else el.add(opt,el.options[el.options.length]);}
}
function getCity(param)
{
param = 'cmd=getcity&state='+param;
http( 'GET' , '/dj-photo-video.nsf/ajax?openagent&'+param , updateCity , null ); 
}