geoportaal_niscode       = "23088";
geoportaal_startupmodule = "stratenatlas";
geoportaal_bgcolor       = "F0F8FC";

        var xOffset = -340;
        var yOffset = -180;
  
        function showPopup (targetObjectId, eventObj) {
          if (eventObj) {
            hideCurrentPopup();
            eventObj.cancelBubble = true;
            // move popup div to current cursor position 
            var newXCoordinate = (eventObj.pageX)?eventObj.pageX + xOffset:eventObj.x + xOffset + ((document.body.scrollLeft)?document.body.scrollLeft:0);
            var newYCoordinate = (eventObj.pageY)?eventObj.pageY + yOffset:eventObj.y + yOffset + ((document.body.scrollTop)?document.body.scrollTop:0);
            moveObject(targetObjectId, newXCoordinate, newYCoordinate);
            // and make it visible
            if (changeObjectVisibility(targetObjectId, 'visible')) {
                window.currentlyVisiblePopup = targetObjectId;
                return true;
            }
            else {
                return false;
            }
          }
          else {
            return false;
          }
        } // showPopup
  
        function hideCurrentPopup() {
          // note: we've stored the currently-visible popup on the global object window.currentlyVisiblePopup
          if (window.currentlyVisiblePopup) {
            changeObjectVisibility(window.currentlyVisiblePopup, 'hidden');
            window.currentlyVisiblePopup = false;
          }
        } // hideCurrentPopup
  
        // initialize hacks whenever the page loads
        window.onload = initializeHacks;
        
        // setup an event handler to hide popups for generic clicks on the document
        document.onclick = hideCurrentPopup;
  
        function initializeHacks() {
          // this ugly little hack resizes a blank div to make sure you can click
          // anywhere in the window for Mac MSIE 5
          if ((navigator.appVersion.indexOf('MSIE 5') != -1) 
              && (navigator.platform.indexOf('Mac') != -1)
              && getStyleObject('blankDiv')) {
            window.onresize = explorerMacResizeFix;
          }
          resizeBlankDiv();
          
          // this next function creates a placeholder object for older browsers
          createFakeEventObj();
        }
  
        function createFakeEventObj() {
          // create a fake event object for older browsers to avoid errors in function call
          // when we need to pass the event object to functions
          if (!window.event) {
            window.event = false;
          }
        } // createFakeEventObj
        
        function resizeBlankDiv() {
          // resize blank placeholder div so IE 5 on mac will get all clicks in window
          if ((navigator.appVersion.indexOf('MSIE 5') != -1) 
              && (navigator.platform.indexOf('Mac') != -1)
              && getStyleObject('blankDiv')) {
            getStyleObject('blankDiv').width = document.body.clientWidth - 20;
            getStyleObject('blankDiv').height = document.body.clientHeight - 20;
          }
        }
  
        function explorerMacResizeFix () {
          location.reload(false);
        }
        
        function getStyleObject(objectId) {
          // cross-browser function to get an object's style object given its id
          if (document.getElementById && document.getElementById(objectId)) {
            // W3C DOM
            return document.getElementById(objectId).style;
          }
          else if (document.all && document.all(objectId)) {
            // MSIE 4 DOM
            return document.all(objectId).style;
          }
          else if (document.layers && document.layers[objectId]) {
            // NN 4 DOM.. note: this won't find nested layers
            return document.layers[objectId];
          }
          else {
            return false;
          }
        } // getStyleObject
        
        function changeObjectVisibility(objectId, newVisibility) {
          // get a reference to the cross-browser style object and make sure the object exists
          var styleObject = getStyleObject(objectId);
          if (styleObject) {
            styleObject.visibility = newVisibility;
            return true;
          }
          else {
            // we couldn't find the object, so we can't change its visibility
            return false;
          }
        } // changeObjectVisibility
        
        function moveObject(objectId, newXCoordinate, newYCoordinate) {
          // get a reference to the cross-browser style object and make sure the object exists
          var styleObject = getStyleObject(objectId);
          if (styleObject) {
            styleObject.left = newXCoordinate;
            styleObject.top = newYCoordinate;
            return true;
          }
          else {
            // we couldn't find the object, so we can't very well move it
            return false;
          }
        } // moveObject
        
				function showhidestars() {
					if (document.form.type.selectedIndex == 2) {
						document.form.stars.disabled = true;
					}
          else {
						document.form.stars.disabled = false;
					}
				}
				
				function hideshowdatefield() {
					if (document.form.showavailabilities.checked == true) {
						showfield('vardatefield');
					}
          else {
						hidefield('vardatefield');
					}
				}
				
				function hidefield(id) {
					if (document.getElementById) { // DOM3 = IE5, NS6
						document.getElementById(id).style.display = 'none';
					}
					else {
						if (document.layers) { // Netscape 4
							document.id.display = 'none';
						}
						else { // IE 4
							document.all.id.style.display = 'none';
						}
					}
				}

				function showfield(id) {
					if (document.getElementById) { // DOM3 = IE5, NS6
						document.getElementById(id).style.display = 'block';
					}
					else {
						if (document.layers) { // Netscape 4
							document.id.display = 'block';
						}
						else { // IE 4
							document.all.id.style.display = 'block';
						}
					}
				}