function createCookie(name,value,days,domain){if(days){var date=new Date;date.setTime(date.getTime()+days*24*60*60*1e3);var expires="; expires="+date.toGMTString()}else var expires="";days!=-1&&readCookie(name)!=null&&eraseCookie(name);document.cookie=name+"="+value+expires+"; path=/; domain="+domain}function readCookie(name){for(var nameEQ=name+"=",ca=document.cookie.split(";"),i=0;i<ca.length;i++){var c=ca[i];while(c.charAt(0)==" ")c=c.substring(1,c.length);if(c.indexOf(nameEQ)==0)return c.substring(nameEQ.length,c.length)}return null}function eraseCookie(name){createCookie(name,"",-1)};