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function filter_str(str)
{   
    interval=typeof(arguments[1])!='undefined'?arguments[1]:' ';
    if(str.length>0)str=DBC2SBC(str)
    return str.replace(/[^\u4E00-\u9FA5a-zA-Z0-9]/g,interval)
}
//* ²ÎÊý˵Ã÷:
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function DBC2SBC(str) {
var i;
var result='';
flag=typeof(arguments[1])!='undefined'?arguments[1]:1;
if (str.length


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A
65
J
74
S
83
1
49
B
66
K
75
T
84
2
50
C
67
L
76
U
85
3
51
D
68
M
77
V
86
4
52
E
69
N
78
W
87
5
53
F
70
O
79
X
88
6
54
G
71
P
80
Y
89
7
55
H
72
Q
81
Z
90
8 ......
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