function setCookie(c_name, value, expiredays)
	{var exdate=new Date();
	exdate.setDate(exdate.getDate()+expiredays);
	document.cookie=c_name+ "=" +escape(value)+
	((expiredays==null) ? "" : ";expires="+exdate.toGMTString());}

function getCookie(c_name)
	{if (document.cookie.length>0)
	{c_start=document.cookie.indexOf(c_name + "=");
	if (c_start!=-1)
	{c_start=c_start + c_name.length+1;
	c_end=document.cookie.indexOf(";", c_start);
	if (c_end==-1) c_end=document.cookie.length;
	return unescape(document.cookie.substring(c_start, c_end));}}
	return "";}

function checkCookie(c_name, value, expiredays)
	{RetrievedCookie=getCookie(c_name);
	if(RetrievedCookie!=null && RetrievedCookie!=""){return true;}
	else{return false;}}