function D(contentId){
  	var w = 800;
	var h = 580;
	var newwindow=window.open("ContentShow.jsp?l="+contentId,"ContentShow","width="+w+",height="+h+",resizable=yes,scrollbars=1");
	newwindow.moveTo((window.screen.width-w)/2,(window.screen.height-h)/2);
	newwindow.focus();
}
function L(letterId){
  	var w = 620;
	var h = 650;
	var newwindow=window.open("LetterShow.jsp?l="+letterId,"LetterShow","width="+w+",height="+h+",resizable=yes,scrollbars=1");
	newwindow.moveTo((window.screen.width-w)/2,(window.screen.height-h)/2);
	newwindow.focus();
}