http://developer.android.com/intl/ko/guide/webapps/targeting.html
<head>
<title>Example</title>
<meta name="viewport" content="width=device-width, user-scalable=no" />
</head>
<meta name="viewport"
content="
height = [pixel_value | device-height] ,
width = [pixel_value | device-width ] ,
initial-scale = float_value ,
minimum-scale = float_value ,
maximum-scale = float_value ,
user-scalable = [yes | no] ,
target-densitydpi = [dpi_value | device-dpi |
high-dpi | medium-dpi | low-dpi]
" />
