function popupWindow(url,widthX,heightY)
{
		var windows ="toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=no,width=";
		windows+=widthX;
		windows+=",height=";
		windows+=heightY;
		windows+="screenX=0,screenY=0,top=0,left=100";//
		window.open(url,'_blank',windows)	
}

function form_submit(value)
{
	document.all.action_chat.value =  value;
	document.all.frm3.submit();
	return false;
}
	
var win=null;
function NewWindow(mypage,myname,w,h,scroll,pos){
if(pos=="random"){LeftPosition=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;TopPosition=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;}
if(pos=="center"){LeftPosition=(screen.width)?(screen.width-w)/2:100;TopPosition=(screen.height)?(screen.height-h)/2:100;}
else if((pos!="center" && pos!="random") || pos==null){LeftPosition=0;TopPosition=20}
settings='width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=yes'; 
win=window.open(mypage,myname,settings);}

function hidden()
{
	/*flash.style.display = "none";
	hinh.style.display = "";*/
}
function appear()
{
	flash.style.display = "";
	hinh.style.display = "none";
}

function hidden_bg()
{
	/*bg_flash.style.display = "none";
	bg_hinh.style.display = "";*/
}
function appear_bg()
{
	bg_flash.style.display = "";
	bg_hinh.style.display = "none";
}