function Changeidc(checked)
	{
		if (checked==true)
		{
			document.getElementById("pws").innerHTML="<input name=\"password\" type=\"password\" id=\"password\" class=\"input\" onclick=\"this.value = ''\" value=\"pass\" size=\"10\" maxlength=\"20\" />";
			document.getElementById("user").innerHTML="<input name=\"username\" type=\"text\" class=\"input\" id=\"username\" onclick=\"this.value = ''\" value=\"用户名\" size=\"10\" maxlength=\"15\" />";
			document.login.idc_place[0].selected=true;
			document.getElementById("dis").style.display='block';
			document.getElementById("code").style.display='none';
		}
		else
		{
			document.getElementById("dis").style.display='none';
		}
	}
	function Changecdn(checked)
	{
		if (checked==true)  
		{
			document.getElementById("pws").innerHTML="<input name=\"password\" type=\"password\" id=\"password\" class=\"input\" onclick=\"this.value = ''\" value=\"pass\" size=\"10\" maxlength=\"20\" />";
			document.getElementById("user").innerHTML="<input name=\"userName\" type=\"text\" class=\"input\" id=\"username\" onclick=\"this.value = ''\" value=\"用户名\" size=\"10\" maxlength=\"15\" />";
			for(i=0;i<4;i++)
			{
				document.login.idc_place[i].selected=false;
			}
			document.getElementById("dis").style.display='none';
			document.getElementById("code").style.display='block';
		}
		else
		{
			for(i=0;i<4;i++)
			{
				document.login.idc_place[i].selected=false;
			}
			document.getElementById("dis").style.display='none';
			document.getElementById("code").style.display='none';
		}
	}
	function loginsubmit()//注意与后台数据库的对应顺序
	{
		if(document.login.place[0].checked==true)
		{
			if (document.login.idc_place[0].selected==true)//北京
			{
				document.login.action='http://203.212.6.24/hanjie/login.php';
			}
			else if(document.login.idc_place[1].selected==true)//上海
			{
				document.login.action='http://shmrtg.chinanetcenter.com/hanjie/login.php';
			}
			else if(document.login.idc_place[2].selected==true)//广州
			{
				document.login.action='http://gzmrtg.chinanetcenter.com/hanjie/login.php';
			}
			else if(document.login.idc_place[3].selected==true)//深圳
			{
				document.login.action='http://www.cncsz.com/index.php';  
			}
		}
		else if(document.login.place[1].checked==true)
			{
				document.login.action='http://myview.51cdn.com/logon.do'; 
			}
	}
	function CheckForm()
	{
		if (document.login.username.value=="")
		{
			alert("用户名不能为空！")
			document.login.username.focus();
			return false;
		}
	}