function Search(onSearch) {
    var searchString = document.getElementById("ctl00_Header_SearchText").value.replace("'","");
    var searchDDIndex = document.getElementById("ctl00_Header_SearchBarDDL").selectedIndex;
    var searchDDValue = document.getElementById("ctl00_Header_SearchBarDDL").options[searchDDIndex].text

    if (onSearch == true) {
        var control = document.getElementById("ctl00_MainBody_Xaml");
        if (control != null) {
            control.Content.Page.GoSearch(searchString, searchDDValue);
        } 
    }
    else {
        var url = "/Search.aspx?sstr=" + searchString + "&ddi=" + searchDDIndex;
        window.location = url;
    }
}