function getCookie(name){
	var cook=document.cookie;
	var begin=cook.indexOf(name+'=');
	if(begin<0)
		return '';
	begin=cook.indexOf('=',begin)+1;
	var end=cook.indexOf(';',begin);
	if(end<0)
		end=cook.length;
	return unescape(cook.substring(begin,end));
}
function setCookie(name,value,expires){
	var today=new Date();
	today.setDate(today.getDate()+expires);
	document.cookie=name+'='+escape(value)+';path=/;expires='+today.toGMTString()+';';
}
function doneWin(name){
	if(document.getElementById(name+'_close').checked){
		setCookie(name,'done',1);
	}
	self.close();
}
function doneLayer(name){
	if(document.getElementById(name+'_close').checked){
		setCookie(name,'done',1);
	}
	document.getElementById(name).style.display='none';
}
function closeWin(){
	self.close();
}
function closeLayer(name){
	document.getElementById(name).style.display='none';
}