登录浏览器版本判断和cookie的使用

function init(){var ua = navigator.userAgent.toLowerCase();var version;var obj=document.getElementById("showIndex");obj.style.marginTop=(document.body.clientHeight-563)/2;if(window.ActiveXObject){version = ua.match(/msie ([\d.]+)/)[1];if(version<7){alert("请使用Internet Explorer 7.0及以上浏览器，确保系统运行正常！");}}else{alert("请使用Internet Explorer 7.0及以上浏览器，确保系统运行正常！");}if(utilObj.getCookie('j_username')!=''||utilObj.getCookie('j_password')!=''){document.getElementById("j_username").value=utilObj.getCookie('j_username');document.getElementById("j_password").value=utilObj.getCookie('j_password');document.getElementById("j_rember").checked=true;}document.form1.j_username.focus();}

function doRemove(){document.getElementById("j_rember").checked=false;utilObj.delCookie('j_password');utilObj.delCookie('j_username');}function doRember(){if(document.getElementById("j_rember").checked){utilObj.setCookie('j_password',document.getElementById("j_password").value);utilObj.setCookie('j_username',document.getElementById("j_username").value);}else{utilObj.delCookie('j_password');utilObj.delCookie('j_username');}}