function makePicwin(url, myWidth, myHeight, caption) {
var win;
var windowName;
var params;
windowName = "PictureWindow";
params = "toolbar=0,";
params += "location=0,";
params += "directories=0,";
params += "status=0,";
params += "menubar=0,";
params += "scrollbars=0,";
params += "resizable=0,";
params += "top=" +((screen.height-myHeight)/2)+ ",";
params += "left=" +((screen.width-myWidth)/2)+ ",";
params += "width="+ myWidth+",";
params += "height="+ myHeight;
var wcontent = "" +caption+ "";
wcontent += "";
wcontent += "" +caption+ "
";
wcontent += "![](" +url+ ")
";
wcontent += "";
win = window.open('', windowName, params);
win.document.write(wcontent);
}