function checkstr(str) {
num=str.length
var arr=str.match(/[^\\\\\\\\\\\\\\\\x00-\\\\\\\\\\\\\\\\x80]/ig)
if(arr!=null)num+=arr.length
return num
}
function CheckUserName(UserName) {
if(checkstr(UserName) > 30 || checkstr(UserName) < 4) {
} else {
}
}