function get_top_left(width, height){
	if (parseInt(navigator.appVersion)>3) {
		if (navigator.appName=="Netscape") {
	  		winW = window.innerWidth;
	  		winH = window.innerHeight;
	 		winL = window.screenX;
	 		winT = window.screenY;
	 	}
	 	if (navigator.appName.indexOf("Microsoft")!=-1) {
	  		winW = document.body.offsetWidth;
	  		winH = document.body.offsetHeight;
	  		winL = window.screenLeft;
	  		winT = window.screenTop;
	 	}
	}
	
	var scroll = 0;
	var l = winL + winW/2 - width/2;
	var t = winT + winH/2 - height/2;
	
	
  	if(screen.width <= width){
  		width=screen.width;
  	}
  	if(screen.height <= height){
  		height=screen.height;
 	 	var t = 0;
  		var scroll = 1;
  	}
	return Array(t,l);
}

function openwin(uri,title,w,h){
		if(w){wwidth = w;}else{	wwidth = 380;}
		if(h){wheight = h; }else{ wheight = 380;}
		xy = get_top_left(wwidth, wheight);
		wleft = xy[1];
		wtop = xy[0];
		wnd = window.open(uri, "sendtofriend", "width="+wwidth+", height="+wheight+", left="+wleft+", top="+wtop+", toolbar=no, location=no, scrollbars=yes, status=no, menubar=no, resizable=no, directories=no");
	}