function openViewer() {
//	window.open('null.html', '_viewer', 'width=650, height=620, menubar=no, toolbar=no, scrollbars=no, resizable=yes');
	window.open('null.html', '_viewer', 'width=640, height=680, menubar=no, toolbar=no, scrollbars=no, resizable=yes');
}
function addBookmark(title,url) { 
	if (window.sidebar) { 
		window.sidebar.addPanel(title, url,""); 
	} else if( document.all ) { 
		window.external.AddFavorite( url, title); 
	} else if( window.opera && window.print ) { 
		return true; 
	} 
}