var xmlHttp_rs;

function regionsSelect(id_state)
{
xmlHttp_rs=GetXmlHttpObject()
//id_state=element.value;
if (xmlHttp_rs==null)
 {
 alert ("Browser does not support HTTP Request")
 return
 }
var url="regions_select.php"
url=url+"?id_state="+id_state
url=url+"&sid="+Math.random()
xmlHttp_rs.onreadystatechange=stateChanged_rs
xmlHttp_rs.open("GET",url,true)
xmlHttp_rs.send(null)
}

function stateChanged_rs()
{
if (xmlHttp_rs.readyState==4 || xmlHttp_rs.readyState=="complete")
 {
 document.getElementById("regions_select").innerHTML=xmlHttp_rs.responseText
 }
}