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   function trimToLeft(str){
        var i;
        for(i=0;i<str.length; i++) {
            if(str.charAt(i)!=" ") break;
        }
        str = str.substr(i);
        return str;
    }
   
    // È¥µô×Ö·û´®Óұ߿ոñ
    function trimToRight(str){
        var i;
        for(i=str.length-1;i>=0;i--){
            if(str.charAt(i)!=" ") break;
        }
        str = str.substring(0,i+1);
        return str;
    }
   
    // È¥µô×Ö·û´®Á½¶Ë¿Õ¸ñ
    function trim(str){
        return rTrim(lTrim(str));
    }


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