Zoom Calc

by Dhanck

HTML

<div id=zoomdiv style="width:100%;position:fixed;"></div>
 <div id="result"></div>

JavaScript

var zoom=$("#zoomdiv").width()*1.0 / screen.availWidth;

    $(window).resize(function(){
        zoom=$("#zoomdiv").width()*1.0 / screen.availWidth;
        $('#result').html(zoom);    
    });