// �����w��
        var portraitWidth,landscapeWidth;
        $(window).bind("resize", function(){
            if(Math.abs(window.orientation) === 0){
                if(/Android/.test(window.navigator.userAgent)){
                    if(!portraitWidth)portraitWidth=$(window).width();
                }else{
                    portraitWidth=$(window).width();
                }
                $("html").css("zoom" , portraitWidth/320 );
            }else{
                if(/Android/.test(window.navigator.userAgent)){
                    if(!landscapeWidth)landscapeWidth=$(window).width();
                }else{
                    landscapeWidth=$(window).width();
                }
                $("html").css("zoom" , landscapeWidth/320 );
                //$("html").css("zoom" , $(window).width/320 );
            }
        }).trigger("resize");