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() {
	welcome_cookie=getCookie('welcome-cookie');
	if (welcome_cookie!=null && welcome_cookie!="") {
		document.getElementById("welcome-message").innerHTML = welcome_cookie;
	}else{
		setCookie('welcome-cookie', 'Welcome back', 365);
		document.getElementById("welcome-message").innerHTML = "Welcome to our website";
	}
}