//var tabsNum = 5;
var curTab = 1;

function goTab(num, tabsNum) {
        var obj1 = document.getElementById('tab' + num + 'l');
        var obj2 = document.getElementById('tab' + num + 'bg');
        var obj3 = document.getElementById('tab' + num + 'r');

        hideTab(curTab, tabsNum);

        if (num == 1) {
                obj1.className = 'yel_l1';
        } else {
                obj1.className = 'yel_l2';
                var newNum = num - 1;
                var obj = document.getElementById('tab' + newNum + 'r');
                obj.className = 'gre_r2';
        }
        obj2.className = 'yelbg';
        obj3.className = 'yel_r';
        if (num != tabsNum) {
                var newNum = num + 1;
                var obj = document.getElementById('tab' + newNum + 'l');
                obj.className = 'gre_l3';
        } else {
                var obj = document.getElementById('lasttab');
                obj.className = 'yel_f';
        }

        var lineObj1 = document.getElementById('line1');
        var lineObj2 = document.getElementById('line2');
        var lineObj3 = document.getElementById('line3');

        if (num == 1 ) {
                lineObj1.colSpan = 1;
                lineObj2.className = 'left_dot_or';
        } else {
                lineObj1.colSpan = 4 + (num - 2)*3;
                lineObj2.className = 'no_bg';
        }
        lineObj3.colSpan = 15 - lineObj1.colSpan;
                lineObj2.style.backgroundColor = 'transparent';

                var newsItem = document.getElementById('detailImpNews_' + curTab);
                newsItem.style.display = 'none';

        curTab = num;

                newsItem = document.getElementById('detailImpNews_' + curTab);
                newsItem.style.display = 'block';

        return false;
}

function hideTab(num, tabsNum) {
        var obj1 = document.getElementById('tab' + num + 'l');
        var obj2 = document.getElementById('tab' + num + 'bg');
        var obj3 = document.getElementById('tab' + num + 'r');

        if (num == 1) {
                obj1.className = 'gre_l1';
        } else {
                obj1.className = 'gre_l2';
                var newNum = num - 1;
                var obj = document.getElementById('tab' + newNum + 'r');
                obj.className = 'gre_r';
        }
        obj2.className = 'grebg';
        obj3.className = 'gre_r';

        if (num != tabsNum) {
                var newNum = num + 1;
                var obj = document.getElementById('tab' + newNum + 'l');
                obj.className = 'gre_l2';
        } else {
                var obj = document.getElementById('lasttab');
                obj.className = 'gre_f';
        }
}

if (document.getElementById) {
                document.onkeydown = escapekey;
}

function escapekey(e) {
        var code;
        if (!e) var e = window.event;
        if (e.keyCode) code = e.keyCode;
        else if (e.which) code = e.which;
        if ((code == 27) && (e.ctrlKey == false) && (e.altKey == false)) hideLogin();
}

function CheckSession(siteUrl)
{
//        if (!CheckCookie()) return showLogin();
        return showLogin();
}

function showLogin() {
        document.getElementById('login-form').style.display = 'block';
        document.getElementById('login_input').focus();
        return false;
}

function hideLogin() {
        document.getElementById('login-form').style.display = 'none';
        return false;
}