function openWin(url, windowName, width, height, scrollbars) {
var win;
var params;
var windowName;
params = "toolbar=0,";
params += "location=0,";
params += "directories=0,";
params += "status=0,";
params += "menubar=0,";
params += "scrollbars="+scrollbars+",";
params += "resizable=1,";
params += "top=20,";
params += "left=20,";
params += "width="+width+",";
params += "height="+height;

win = window.open(url, windowName, params);
}