js实现的类似QQ的等级的代码

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> 
<html> 
    <head> 
        <meta http-equiv="Content-Type" content="text/html; charset=GB2312" /> 
        <title>类似QQ等级</title> 
        <script type="text/javascript"> 
        function $(obj){ 
            return document.getElementById(obj); 
        } 
        function checkIsInteger(str){ 
             if(str == "") 
         return false; 
         if(/^(\-?)(\d+)$/.test(str)) 
return true; 
else 
return false; 
} 
         function t(num){ 
             var str = ""; 
            var sun = Math.floor(num/640); 
            for(var i = 0;i < sun;i++) 
                str += "●"; 
            var month = Math.floor(num/160)%4; 
            for(var j = 0;j < month;j++) 
                str += "<span class="htmlarea"><TEXTAREA id="runcode51548">
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> 
<html> 
    <head> 
        <meta http-equiv="Content-Type" content="text/html; charset=GB2312" /> 
        <title>类似QQ等级</title> 
        <script type="text/javascript"> 
        function $(obj){ 
            return document.getElementById(obj); 
        } 
        function checkIsInteger(str){ 
             if(str == "") 
         return false; 
         if(/^(\-?)(\d+)$/.test(str)) 
return true; 
else 
return false; 
} 
         function t(num){ 
             var str = ""; 
            var sun = Math.floor(num/640); 
            for(var i = 0;i < sun;i++) 
                str += "●"; 
            var month = Math.floor(num/160)%4; 
            for(var j = 0;j < month;j++) 
                str += "

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