function doLogin(formName) {
	var loginForm = formName ? document.forms[formName] : document.forms[0];
	if(loginForm.password.value=="") {
		alert("\u5BC6\u7801\u4E0D\u80FD\u4E3A\u7A7A");
		loginForm.password.focus();
		return;
	}
	var sessionId = document.cookie;
	var index = !sessionId ? -1 : sessionId.indexOf("JSESSIONID=");
	if(index==-1 && location.search) {
		sessionId = location.search.replace("&", ";");
		index = sessionId.indexOf("jsessionid=");
	}
	if(index==-1) {
		alert("\u60A8\u7684\u6D4F\u89C8\u5668\u4E0D\u652F\u6301COOKIE,\u767B\u5F55\u4E0D\u80FD\u5B8C\u6210");
		return;
	}
	sessionId = sessionId.substring(index + "JSESSIONID=".length);
	index = sessionId.indexOf(";");
	if(index!=-1) {
		sessionId = sessionId.substring(0, index);
	}
	loginForm.password.value = hex_md5(loginForm.password.value + sessionId);
	loginForm.submit();
}