function getCookieVal(offset) {
  var endstr = document.cookie.indexOf (";", offset);
  if (endstr == -1)
    endstr = document.cookie.length;
  return unescape(document.cookie.substring(offset, endstr));
}

function getCookie(name) {  
	var arg = name + "=";  
	var alen = arg.length;  

	var clen = document.cookie.length;  
	var i = 0;  
	while (i < clen) {    
	var j = i + alen;    
	if (document.cookie.substring(i, j) == arg)      
		return getCookieVal (j);    
		i = document.cookie.indexOf(" ", i) + 1;    
		if (i == 0) break;   
	}  
	return null;
}


function setCookie (name, value, days) {  

   var exp = new Date(); 
   exp.setTime(exp.getTime() + (days*24*60*60*1000));
	document.cookie = name + "=" + escape (value) + "; expires=" + exp.toGMTString();

}