if((navigator.userAgent.match(/Android/i)) ) {
$(window).bind('resize load', function(){
$("html").css("zoom" , $(window).width()/640 );
});
}
if((navigator.userAgent.match(/iPhone/i)) || (navigator.userAgent.match(/iPad/i))) {
document.write('<meta name="viewport" content="width=640, maximum-scale=2, user-scalable=1;">');
}