function zoom() {
    $("#divContent1 img").click(function () {
      var img = $(this);
      var theImage = new Image();
      theImage.src = img.attr("src");
      //alert (theImage.width);
      openImg($(this).attr("src"),theImage.width,theImage.height,img);
    });
}

function openImg(src,w,h,place){
    if ($("#zoom").length) $("#zoom").remove();
    wwin = $(window).width();
    hwin = $(window).height();
    l = (wwin - 640) / 2;
    l = l+"px";
    if (w > h) {
	styleImg="width: 640px; left: "+l+"; top: 30px";
    } else {
	styleImg="height: 480px; left: "+l+"; top: 30px";
    }
    win = "<img id=\"zoom\" style=\"border: 5px solid #bbb; "+styleImg+"\" src=\""+src+"\">";
    $("#divContent1").before(win);
    $("#zoom").click(function () {
        $("#zoom").remove();
    });
}