function chkaction(){
	if(form1.city.options[form1.city.selectedIndex].value!='null')
	{
		form1.action = form1.city.options[form1.city.selectedIndex].value+"/security/login";
		document.form1.submit();
	}
}
function upck(city){
	if(city=='null')
		document.getElementById("ckimg").src ="http://61.235.124.46/checkcode";
	else
		document.getElementById("ckimg").src = city+"/checkcode";
}
function check(form){
	if(form1.city.options[form1.city.selectedIndex].value=='null')
	{
		alert('请选择地区');
		return false;
	}else{
			if(document.form1.entno.value == '')
		   {
			alert("请填写总机号码！");
			document.form1.entno.focus();
			return false;
		   }
		   if(document.form1.login.value == '')
		   {
			alert("请填写帐号！");
			document.form1.login.focus();
			return false;
		   }
		   if(document.form1.password.value == '')
		   {
			alert("请填写密码！");
			document.form1.password.focus();
			return false;
		   }
		   if(document.form1.ck.value == '')
		   {
			alert("请填写验证码！");
			document.form1.ck.focus();
			return false;
		   }
	   }
return true;
}