function changeSearchForm(strCheckboxId) {
    var objCheckboxSearchWeb = document.getElementById("chkSearchWeb");
    var objCheckboxSearchLitteratur = document.getElementById("chkSearchLitteratur");
    
    if ((objCheckboxSearchWeb.checked == true) && (objCheckboxSearchLitteratur.checked == true)) {
        prepareFormForSearch("SearchAll");
        return;
    }
       
    if (strCheckboxId == "chkSearchWeb") {
        if ((objCheckboxSearchWeb.checked == true) && (objCheckboxSearchLitteratur.checked == false)) {
            prepareFormForSearch("SearchWeb");
            return;
        } else {
            prepareFormForSearch("SearchLitteratur");
            objCheckboxSearchLitteratur.checked = true;
            return;
        }
    }
    
    if (strCheckboxId == "chkSearchLitteratur") {
        if ((objCheckboxSearchWeb.checked == false) && (objCheckboxSearchLitteratur.checked == true)) {
            prepareFormForSearch("SearchLitteratur");
            return;
        } else {
            prepareFormForSearch("SearchWeb");
            objCheckboxSearchWeb.checked = true;
            return
        }
    }
}

function prepareFormForSearch(strSearchType) {
    var objSearchForm = document.getElementById("SearchForm");
    var objSearchFormHiddenField = document.getElementById("HiddenSearchField");
    var objSearchFormSearchField = document.getElementById("SearchField");
    
    
        if (strSearchType == "SearchWeb") {
            objSearchForm.action = "/undermenu/s%C3%B8g/Web";
            objSearchForm.name = "/via236.html";
            objSearchFormHiddenField.value = "200035_14";
            objSearchFormSearchField.name = "QueryBox_64";
        }
        if (strSearchType == "SearchLitteratur") {
            objSearchForm.action = "/via235.html";
            objSearchForm.name = "form200035_13";
            objSearchFormHiddenField.value = "200035_13";
            objSearchFormSearchField.name = "QueryBox_56";
        }
        if (strSearchType == "SearchAll") {
            objSearchForm.action = "/via237.html";
            objSearchForm.name = "form200035_12";
            objSearchFormHiddenField.value = "200035_12";
            objSearchFormSearchField.name = "QueryBox_66";
        }
}