function search() {
    var txt = document.getElementById('ctl00_txtSearch').value;
    if (txt != ''){
        window.location = "/search.aspx?searchtext=" + txt;
    }
}
function change(slideID){
    document.getElementById('slide1').className="slide_closed";
    document.getElementById('slide2').className="slide_closed";
    document.getElementById('slide3').className="slide_closed";
    document.getElementById('slide4').className="slide_closed";
    
    document.getElementById('slidecontent1').className = "slide_content_closed";
    document.getElementById('slidecontent2').className = "slide_content_closed";
    document.getElementById('slidecontent3').className = "slide_content_closed";
    document.getElementById('slidecontent4').className = "slide_content_closed";
    
    document.getElementById('slide'+slideID).className="slide_open";
    document.getElementById('slidecontent'+slideID).className = "slide_content_open";
}