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create table users (uid bigint(20) not null auto_increment primary key unique key,username varchar(100) default null, userpassword varchar(100) default null, nickname varchar(100) default null, sex tinyint(1) default 0,email varchar(100) default null, regtime timestamp(14) default 0);
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<script language="javascript">
function IsDigit(cCheck)
{
return(('0'<=cCheck)&&(cCheck<='9'));
}
function IsAlpha(cCheck)
{
return((('a'<=cCheck)&&(cCheck<='z'))||(('A'<=cCheck)&&(cCheck<='Z')));
}
function IsValid()
{
var struserName=reg.UserName.value;
for(nIndex=0;nIndex<struserName.length;nIndex++)
{
cCheck=struserName.charAt(nIndex);
if(!(IsDigit(cCheck)||IsAlpha(cCheck)))
{
return false;
}
}
return true;
}
function chkEmail(str)
{
return str.search(/[\w\-]{1,}@[\w\-]{1,}\.[\w\-]{1,}/)==0?true:false;
}
function docheck()///////////////This place has a very important problem.MF can't do as wo expect!
{
if(reg.UserNam


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