//-----------------------------------------------
// Alle gebuikte globale variabelen
//-----------------------------------------------

var ns4=document.layers
var ns6=document.getElementById&&!document.all
var ie4=document.all
var isNav=false, isIE=false;

if(parseInt(navigator.appVersion)>=4) {
	if(navigator.appName == "Netscape") isNav=true;
	else 															  isIE=true;
}

//-----------------------------------------------
// Verander een style van een bepaald element
//-----------------------------------------------

function changeClass(ElementID,className){
      if(document.getElementById) { 
          if( document.getElementById(ElementID) != null ) document.getElementById(ElementID).className = className;
      }
      else if(document.all) {
          if( document.all(ElementID) != null) document.all(ElementID).className  = className;
      }
}

//-----------------------------------------------
// Algemene functies om een div aan of uit te zetten
//-----------------------------------------------

function showDIV(divName){
      if(document.getElementById) 
      {
        if( document.getElementById(divName) != null )
        {
          document.getElementById(divName).style.display = 'block';
          document.getElementById(divName).style.visibility ='visible';
        }
      }
      else if(document.layers) {
          for (i=0; i < document.layers.length; i++) {
                var whichEl = document.layers[i];

                if (whichEl.id.indexOf(divName) != -1) {
                    whichEl.display = 'block';
                    whichEl.visibility='show';
                }
          }
      }
      else if(document.all) {
          document.all(divName).style.display = 'block';
          document.all(divName).style.visibility='visible';
      }
}

function hideDIV(divName){ 
      if(document.getElementById) 
      {
        if( document.getElementById(divName) != null )
        {
          document.getElementById(divName).style.visibility='hidden';
          document.getElementById(divName).style.display = 'none';
        }
      }
      else if(document.layers) {
          for (i=0; i < document.layers.length; i++) {
                var whichEl = document.layers[i];

                if (whichEl.id.indexOf(divName) != -1) {
                    whichEl.display = 'none';
                    whichEl.visibility='hide';
                }
          }
      }
      else if(document.all) {
          document.layers[divName].display = 'none';
          document.all(divName).style.visibility='hidden';
      }
}

function openPopupWindow(TheURL,width,height)
{
	if( width > 600 ) {
		var w = window.open( TheURL ,"Details", "status=yes,scrollbars=yes,resizable=yes,width="+width+",height="+height );
	}
	else {
		var w = window.open( TheURL ,"Details", "status=yes,scrollbars=auto,resizable=yes,width="+width+",height="+height );
	}
}

		
//-----------------------------------------------
// Lees querystring params uit
//-----------------------------------------------

QueryString.keys   = new Array();
QueryString.values = new Array();

function QueryString(key) {
	var value = null;
	for (var i=0;i<QueryString.keys.length;i++)	{
		if (QueryString.keys[i]==key) {
			value = QueryString.values[i];
			break;
		}
	}
	return value;
}

function QueryString_Parse() {
	var query = window.location.search.substring(1);
	var pairs = query.split("&");

	for (var i=0;i<pairs.length;i++) {
		var pos = pairs[i].indexOf('=');
		if (pos >= 0)	{
			var argname = pairs[i].substring(0,pos);
			var value = pairs[i].substring(pos+1);
			QueryString.keys[QueryString.keys.length] = argname;
			QueryString.values[QueryString.values.length] = value;
		}
	}
}

QueryString_Parse();