function httpGet(url, elementId) {
	var xmlHttp;
	try
	  {
		  // Firefox, Opera 8.0+, Safari
		  xmlHttp=new XMLHttpRequest();
	  }
	catch (e)
	  {
		  // Internet Explorer
		  try
		    {
			    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		    }
		  catch (e)
		    {
		    try
		      {
			      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		      }
		    catch (e)
		      {
			      alert("Your browser does not support AJAX!");
			      return false;
		      }
		    }
	  }
	
	//verdere code
	xmlHttp.onreadystatechange=function()
    {
	    if(xmlHttp.readyState==4)
	    {		      
		    var html =xmlHttp.responseText;		    
		    var element= document.getElementById(elementId);
		    element.innerHTML = html;	    			
	     } 
	}
	
	var element = document.getElementById(elementId );
	element.innerHTML = 'Een ogenblik geduld a.u.b...';
  	xmlHttp.open("GET",url,true);
  	xmlHttp.send(null);
	
}


function searchField( element, unique ) {
	var url = window.location.href;
	
	var ds=document.getElementById('keyWordSelect').value;
	var es=document.getElementById('subDomeinSelectie').value;
	var at=document.getElementById('materialSelection').value;

	if ( ds == 'All' & es == 'All' & at == 'All' ) {
		window.location.reload();
	} else {
		url = url.substring( 0, url.indexOf( '.nsf') ) + '.nsf/searchToolBox?openagent&ds=' + ds + 
			'&es=' + es + '&at=' + at + '&context=' + contextVar + "&nocache=" + unique;
		//document.getElementById( 'toolboxOverzicht' ).innerHTML = url;	
		httpGet(url, 'toolboxOverzicht') ;
	}
	
}

function whichElement(e)
{
	var targ;
	if (!e)	  {
	  var e=window.event;
	}

	if (e.target) {
		  targ=e.target;
	} else if (e.srcElement)  {
	  targ=e.srcElement;
	}
	if (targ.nodeType==3) // defeat Safari bug
	{
	  targ = targ.parentNode;
	}
	return targ;
}



function checkEnter(e)
{
	var keynum;
	if(window.event) // IE
	{
	  keynum = e.keyCode;	
  	}
	else if(e.which) // Netscape/Firefox/Opera
  	{
  		keynum = e.which;
  	}
	if (keynum==13) {
	//	searchField(whichElement(e) )
		whichElement(e).blur();
	}
}