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) {  
   var argv = SetCookie.arguments;  
   var argc = SetCookie.arguments.length;  
   var expires = (argc > 2) ? argv[2] : null;  
   var path = (argc > 3) ? argv[3] : null;  
   var domain = (argc > 4) ? argv[4] : null;  
   var secure = (argc > 5) ? argv[5] : false;  
   document.cookie = name + "=" + escape (value) + 
   ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + 
   ((path == null) ? "" : ("; path=" + path)) +  
   ((domain == null) ? "" : ("; domain=" + domain)) +    
   ((secure == true) ? "; secure" : "");
}

function DeleteCookie (name) {  
   var exp = new Date();  
   exp.setTime (exp.getTime() - 1);  
   var cval = GetCookie (name);  
   document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}


/* expire after a year*/
var expdate = new Date();
expdate.setTime (expdate.getTime() + (24*60*60*1000*365));


function setStyle(item) {
    var url = item.options[item.selectedIndex].value;
    SetCookie ('mycss',url,expdate);
    self.location.reload();
}

function selectIt(url) {
    var item = document.getElementById("styleselect");
    for(var i=0; i< item.options.length; i++) {
	if(item.options[i].value == url) {
	    break;
	}
    }
    item.selectedIndex = i;
}

var mycss = GetCookie('mycss');
var defcss = 'css/plain.css';
if(mycss) {
    document.writeln("<link rel='stylesheet' href='"+mycss+"'></link>");
} else {
    document.writeln("<link rel='stylesheet' href='"+defcss+"'></link>");
}
      
function doInit() {
     if(mycss) { selectIt(mycss); }
     else { selectIt(defcss); }
}
      
function showPost() {
     var item = document.getElementById("showpost");
     if(item.style.display != "") {
        item.style.display = "";
     } else {
        item.style.display = "none";
     }
}