function makeHttpRequest(url){ 
    if (window.XMLHttpRequest) { // Mozilla, Safari,... 
        http_request = new XMLHttpRequest(); 
        if (http_request.overrideMimeType) { 
            http_request.overrideMimeType('text/xml'); 
    } 
        } else if (window.ActiveXObject) { // IE 
            try { 
                http_request = new ActiveXObject("Msxml2.XMLHTTP"); 
            } catch (e) { 
                try { 
                    http_request = new ActiveXObject("Microsoft.XMLHTTP"); 
                } catch (e) {} 
            } 
        } 
    if (!http_request) { 
        alert('Helaas, jouw browser is te oud om deze pagina te kunnen laden.'); 
        return false; 
    } 
        http_request.open('GET', url, true); 
        http_request.send(null); 
}

function getField(fldName, strType) {
  var arrCheck = new Array;
  var blnFound = false;
  arrObjects = document.getElementsByTagName(strType.toUpperCase());

  for (i=0; i<arrObjects.length; i++) {
    if (arrObjects[i].id.split("_")[arrObjects[i].id.split("_").length - 1] == fldName) {
      blnFound = true;
      break;
    }
  }
	
  return arrObjects[i];
}

function HoverImage(Image) {
    var Ext = "";
    if (Image.src.indexOf(".jpg") > 0) {
        Ext = ".jpg";
    }
    else if (Image.src.indexOf(".gif") > 0) {
        Ext = ".gif";
    }
    Image.src = Image.src.substring(0, Image.src.indexOf("_button")) + "_hover" + Ext;
}

function RestoreImage(Image) {
    var Ext = "";
    if (Image.src.indexOf(".jpg") > 0) {
        Ext = ".jpg";
    }
    else if (Image.src.indexOf(".gif") > 0) {
        Ext = ".gif";
    }
    Image.src = Image.src.substring(0, Image.src.indexOf("_hover")) + "_button" + Ext;
}