function loadwin(url, wname, dw, dh, rs, sc) {
var w = 800, h = 600;

if (document.all || document.layers) {
   w = screen.availWidth;
   h = screen.availHeight;
}

var popW = dw, popH = dh;
var leftPos = (w-popW)/2, topPos = (h-popH)/2;
	
window.open(url,wname,'resizable=' + rs + ',width=' + popW + ',height=' + popH + ',top=' + topPos + ',left=' + leftPos + 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=' + sc);

}