var xmlHttp
function mostrar(strid)
{ 
 xmlHttp=GetXmlHttpObject()
 if (xmlHttp == null)
 {
  alert ("O browser não suporta HTTP Request")
  return
 }
 var url="index.php"
 url=url+"?pshow=events&idevent="+strid
 url=url+"&sid="+Math.random()
 xmlHttp.onreadystatechange=stateChanged
 xmlHttp.open("GET",url,true)
 xmlHttp.send(null)
}

function stateChanged()
{
 if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 {
  document.getElementById("texto").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;
}