var screenW = 640, screenH = 480;
if (parseInt(navigator.appVersion)>3) {
 screenW = screen.width;
 screenH = screen.height;
}
else if (navigator.appName == "Netscape" 
    && parseInt(navigator.appVersion)==3
    && navigator.javaEnabled()
   ) 
{
 var jToolkit = java.awt.Toolkit.getDefaultToolkit();
 var jScreenSize = jToolkit.getScreenSize();
 screenW = jScreenSize.width;
 screenH = jScreenSize.height;
}


function getScrollTop() {
  var scrOfY = 0;
  if( typeof( window.pageYOffset ) == 'number' ) {
    //Netscape compliant
    scrOfY = window.pageYOffset;
  } else if( document.body && document.body.scrollTop ) {
    //DOM compliant
    scrOfY = document.body.scrollTop;
  } else if( document.documentElement && document.documentElement.scrollTop ) {
    //IE6 standards compliant mode
    scrOfY = document.documentElement.scrollTop;
  }
  return scrOfY;
}


function sendRequest(d, u) { 
  var pageRequest = false; 
        
  // Create the object used to make the Ajax request 
  if (window.XMLHttpRequest) // if Mozilla, Safari etc 
    pageRequest = new XMLHttpRequest(); 
  else if (window.ActiveXObject) { // if IE 
    try { 
      pageRequest = new ActiveXObject("Msxml2.XMLHTTP"); 
    } catch (e) { 
      try { 
        pageRequest = new ActiveXObject("Microsoft.XMLHTTP"); 
      } catch (e) {} 
    } 
  } else return false; 

  // This function displays the result of the server call by using 
  // innerHTML 
  pageRequest.onreadystatechange=function() { 
    if (pageRequest.readyState==4) { 
      // Get a reference to the container where the search results 
      // will be displayed 
      var resultDiv = document.getElementById(d); 

      resultDiv.innerHTML = "";
      
      // Status of 200 indicates retrieval from server is successful 
      if (pageRequest.status == 200) { 
        resultDiv.innerHTML = pageRequest.responseText; 
      } else { 
        resultDiv.innerHTML = "Error retrieving search results"; 
      } 
    } 
  } 
    
  // Prepare the server request by specifying what will be requested 
  pageRequest.open("GET", u, true); 
       
  // Send the request 
  pageRequest.send(null); 
}