function check(){
	if (form1.username.value==""){
		    alert("请填写您的用户名！");
			form1.username.focus();
		    return false;
			}else if(form1.username.value.length<3){
	     window.alert ( "用户名字符数应必须大于或等于3！" );
	     return false;
	    }

	if (form1.password.value==""){
		    alert("请填写您的密码！");
			form1.password.focus();
		    return false;
			}
	if (form1.password.value!=form1.password2.value){
		    alert("确认密码不正确!");
			form1.password2.focus();
		    return false;
			}
	if (form1.email.value==""){
		    alert("请填写您的电子信箱！");
			form1.email.focus();
		    return false;
			}
	if (form1.cityname.value==""){
		    alert("请填写您将建立的城池名称！");
			form1.cityname.focus();
		    return false;
			}else if(form1.cityname.value.length<2){
	     window.alert ( "城池名称字符数应必须大于或等于2！" );
	     return false;
	    }
if (form1.flagname.value==""){
		    alert("请填写您将建立的国家旗号！");
			form1.flagname.focus();
		    return false;
			}else if(form1.flagname.value.length>1){
	     window.alert ( "国家旗号字数应必须等于1！" );
	     return false;
	    }		
	var letters = 'ghijklabvwxyzABCDEFef)_+|<>?:mnQRSTU~!@#$%^VWXYZ`1234567opGHIJKLu./;'+"'"+'[]MNOP890-='+'\\'+'&*("{},cdqrst'+"\n";
	var split = letters.split("");
	var num = '';
	var c1 = '';
	var encrypted = '';
	var it1 = document.form1.password.value;
	var b1 = '0';
	var chars1 = it1.split("");
	while(b1<it1.length){c1 = '0';
	while(c1<letters.length){if(split[c1] == chars1[b1]){if(c1 == "0") { c1 = ""; }if(eval(c1+10) >= letters.length){num = eval(10-(letters.length-c1));
	encrypted += split[num];}else{num = eval(c1+10);encrypted += split[num];}}c1++;}b1++;}document.form1.password.value = encrypted;encrypted = '';
	document.form1.submit();			   
	return true;
}
function isValideKey(keyCode)
{
if (keyCode==13 || (keyCode>=48 && keyCode<=57) || (keyCode>=65 && keyCode<=90) || (keyCode>=97 && keyCode<=122) || keyCode==95)
  return true;
else
  return false;
}




function MM_openBrWindow(theURL,winName,features) { //v2.0
window.open(theURL,winName,features);
}



function MM_reloadPage(init) {  //reloads the window if Nav4 resized
if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);