function showChild(el){
	uls = document.getElementsByTagName('ul');
	for(var i=0;i<uls.length; i++){
		if(uls[i].className=='submenu')uls[i].style.display='none';
	}
	id = el.id.split('link');
	id = id[1];		
	ce = document.getElementById('node'+id);
	if(ce.style.display=='none')ce.style.display='block';
	else ce.style.display='none';
}

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 ""
}