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var
phoneWidth
=
parseInt
(
window
.
screen
.
width
),
phoneScale
=
phoneWidth
/
750
;
document
.
write
(
'<meta name="viewport" content="width=750, initial-scale=1, minimum-scale = '
+
phoneScale
+
', maximum-scale = '
+
phoneScale
+
', target-densitydpi=device-dpi">'
);