function set_cookie(name,value,expires,path,domain,secure)
{var today=new Date();today.setTime(today.getTime());if(expires)
{expires=expires*1000*60*60*24;}
var expires_date=new Date(today.getTime()+(expires));document.cookie=name+"="+escape(value)+
((expires)?";expires="+expires_date.toGMTString():"")+
((path)?";path="+path:"")+
((domain)?";domain="+domain:"")+
((secure)?";secure":"");}
function get_cookie(name){var start=document.cookie.indexOf(name+"=");var len=start+name.length+1;if((!start)&&(name!=document.cookie.substring(0,name.length)))
{return null;}
if(start==-1)return null;var end=document.cookie.indexOf(";",len);if(end==-1)end=document.cookie.length;return unescape(document.cookie.substring(len,end));}
function delete_cookie(name,path,domain){if(get_cookie(name))document.cookie=name+"="+((path)?";path="+path:"")+((domain)?";domain="+domain:"")+";expires=Thu, 01-Jan-1970 00:00:01 GMT";}