var xmlHttp

function menu_side(str)
{ 
xmlHttp=GetXmlHttpObject()

if (xmlHttp==null)
{
alert ("Browser does not support HTTP Request")
return
} 
var url="front.asp"
url=url+"?"+str

url=url+"&sid="+Math.random()
  document.getElementById('side_vis').innerHTML = '<div align="center"> <br><br><br><br><br><img src="image_site/loading.gif"></div>';

xmlHttp.onreadystatechange=stateChanged1 
xmlHttp.open("GET",url,true)
xmlHttp.send(null)

}

function stateChanged1() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
{ 
document.getElementById("side_vis").innerHTML=xmlHttp.responseText 
} 
} 

function GetXmlHttpObject()
{
var xmlHttp=null;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
  }
return xmlHttp;
}