$(document).ready(function(){ 
    if ($(".jqzoom").size())
    {
      $(".jqzoom").jqueryzoom({  
                xzoom: 460, //zooming div default width(default width value is 200) 
                yzoom: 300, //zooming div default width(default height value is 200) 
                offset: 10, //zooming div default offset(default offset value is 10)
                position: "right", //zooming div position(default position value is "right") 
                preload: 1 , // preload of images :1 by default 
                lens:1 // lens over the image 1 by default 
      });                            
    }
});