function modalWindow(newloc, width, height){
 var ih = height;
 var iw = width;
 var features = "menubar=no,location=no,toolbar=no,scrollbars=no" +
 ",width=" + iw + ",height=" + ih;
 features += ",top=200,left=200";
 window.open (newloc, "pagename", features);
 //Define current window
 parentwin = window.self;
 //Declare current window as its own child
 parentwin.opener = window.self;
 }