var webTab = document.getElementById("web-tab");
var currentTab = webTab;

var originalCX = document.kereses.cx.value;
var originalCOF = document.kereses.cof.value;
var originalIE = document.kereses.ie.value;

function selectTab(item, submit) {

    document.kereses.q.focus();
    if (item == currentTab) {
        return false;
    }
    
    currentTab.className = "";
    item.className = "selected";
    document.kereses.action = item.href;
    document.kereses.target = item.target;
    
    currentTab = item;
    if (currentTab != webTab) {
        document.kereses.cx.value = "";
        document.kereses.cof.value = "";
        document.kereses.ie.value = "";
        
        document.getElementById("all").checked = true;
        document.getElementById("lgr").checked = false;
        document.getElementById("cty").checked = false;
    } else {
        document.kereses.cx.value = originalCX;
        document.kereses.cof.value = originalCOF;
        document.kereses.ie.value = originalIE;
    }

    if (submit) {
        document.kereses.submit();
    }
    return false;
}

function revert() {
    selectTab(webTab, false);
    document.kereses.q.focus();
}