var newWHwindow = null;
function cleanwindow(image_strng, strWidth, strHeight)
{
var URL_strng = ("imagewindow.htm?" + image_strng);
var options="resizable=no,toolbar=no,location=no,menubar=no,scrollbars=no,width="+strWidth+",height="+strHeight+",left=0,top=0";
WHwindow=window.open(URL_strng, newWHwindow, options);
}