function openwin(location, width, height, top, left, scroll){

var arguments;
var scrollbar;

if(!width) width = 300
if(width == "scroll"){
   scrollbar = "scrollbars";
   width = 300;
   }
   
if(!height) height = 300
if(height == "scroll"){
   scrollbar = "scrollbars";
   height = 300;
   }
   
if(!top) top = 200
if(top == "scroll"){
   scrollbar = "scrollbars";
   top = 200;
   }

if(!left) left = 200
if(left == "scroll"){
   scrollbar = "scrollbars";
   left = 200;
   }
   
if(scroll) scrollbar = "scrollbars"

arguments = "height=" +height +",width=" +width +",left=" +left +",top=" +top +",screenX=" +left +",screenY=" +top +",directories=no,fullscreen=no,location=no,menubar=no,toolbar=no,resizable=yes," +scrollbar;

window.open(location,"popup",arguments);
}