var d = window.document;
if(navigator.userAgent.indexOf('iPhone') > -1)
	d.write('<meta name="viewport" content="width=960px, user-scalable=no, maximum-scale=0.666" />');
else if(navigator.userAgent.indexOf('iPad') > -1)
	d.write('<meta name="viewport" content="width=1280px, user-scalable=no, maximum-scale=0.666" />');
else if(navigator.userAgent.indexOf('Android') > -1)
	d.write('<meta name="viewport" content="width=1024px, user-scalable=yes, maximum-scale=0.3" />');