var xmlHttp4;

function C_ID(c_id)
{ 
document.getElementById(contacts_whichElement).innerHTML = '<br><br>&nbsp;&nbsp;&nbsp;loading....';
//alert(document.getElementById(top_whichElement).innerHTML);
xmlHttp4=GetXmlHttpObject4();

if (xmlHttp4==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
 
var url=contacts_whichLink;
url=url+"?c_id="+c_id;

xmlHttp4.onreadystatechange=stateChanged4;
xmlHttp4.open("GET",url,true);
xmlHttp4.send(null);

//alert(url)//this is used to view the URL being sent to the query page.
}

function stateChanged4() 
{ 

if (xmlHttp4.readyState==4)
{ 

document.getElementById(contacts_whichElement).innerHTML=xmlHttp4.responseText;
}
}

function GetXmlHttpObject4()
{
var xmlHttp4=null;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp4=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp4=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    xmlHttp4=new ActiveXObject("Microsoft.XMLHTTP");
    }
  }
return xmlHttp4;
}
function choose_c()
{
//alert("H");
C_ID(document.contacts.str_department.value);

}