function newImage(arg) {
    if (document.images) {
        rslt = new Image();
        rslt.src = arg;
        return rslt;
    }
}

var preloadFlag = false;
function preloadImages() {
    if (document.images) {
        index_over = newImage("images/multismoke_welkom_open.gif");
        preloadFlag = true;
    }
}

function changeImages() {
    if (document.images && (preloadFlag == true)) {
        for (var i=0; i<changeImages.arguments.length; i+=2) {
	        document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
        }
    }
}

function OpenFolder() {
    var url = "/NL/multismoke-folder.pdf";
    var features = "scrollbars=0,width=800,height=600";
    w = window.open(url, "MultiSmokeFolder", features, true);
    //    if (window.focus) {
    //		w.focus();
    //	}
}