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<script language="JavaScript">
// javascript snipplets mostly nicked from
// http://liorean.web-graphics.com/scripts
//cookie handling
var cookie={ // The Cookie Handler main object
Get:function(n){ // Function for getting cookies
var re=new RegExp(n+'=([^;]*);?','gi'); // Create regex for cookies fetching
var r=re.exec(document.cookie)||[]; // Fetch cookie using regex
return unescape(r.length>1?r[1]:null) // Return unescaped cookie
},
Set:function(n,v,e,p,d,s){ // Function for setting cookies
var t=new Date; // Get current time and date
if(e) // If days to expiry is set
t.setTime(t.getTime()+(e*8.64e7)); // calculate expiry date
document.cookie=n+'='+escape(v)+'; '+(!e?'':'; expires='+t.toUTCString())+(!p?'':'; path='+p)+(!d?'':'; domain='+d)+(!s?'':'; secure') // Set cookie
},
Del:function(n,p,d){ // Function for deleting cookies
var t=cookie.Get(n); // Get cookie
document.cookie=n+'='+(!p?'':'; path='+p)+(!d?'':'; domain='+d)+'; expires=Thu, 01-Jan-70 00:00:01 GMT'; // Delete cookie
return t // Return the deleted cookie
},
Sup:function(){ // Function for detecting cookies support
cookie.Set('c',true); // Set dummy cookie
return cookie.Del('c'); // Return whether dummy was written
}
};
// theme switching
var style={ // Theme Switcher main object
Set:function(t){ // Function for setting active theme
for(var i in this.col) // For each existing title
for(var j=0,f;(f=(j<this.col[i].length)?this.col[i][j]:null);j++) // And all stylesheets of that title
f.disabled=i!=t?true:false; // Set to enabled or disabled depending on whether title matches user input
},
Get:function(){ // Function for determining active theme
for(var i in this.col) // For each existing title
if(!this.col[i][0].disabled) // Unless disabled
return i; // Return title
return this.Pref() // Otherwise try to determine preferred title
},
Pref:function(){ // Function to determine preferred title
for(var i in this.col) // For each existing title
if(!this.col[i][0].disabled) // Unless disabled
return i; // Return title
return null // Otherwise return null
},
sum:function(){ // Function to collect existing titles into a collection
var s=document.styleSheets,i=0; // Set needed variables
for(var f;(f=(i<s.length)?s[i]:null);i++) // For each existing stylesheet
switch(f.title){ // Read title
case '': // If none or blank
break; // Exit
default: // Otherwise
switch(typeof this.col[f.title]){ // Read title
case 'object': // If exists in collection
this.col[f.title][this.col[f.title].length]=f; // Add stylesheet to that title in the collection
break; // Exit
default: // Otherwise
this.col[f.title]=[f] // Add new titla to collection and add stylesheet to that title
}
}
},
onload:function(){ // Function to send to onload handler
style.sum(); // Collect titles
if(cookie.Sup()){ // If cookies support exists
var c=cookie.Get('style'); // Get preferred theme from cookie
style.Set(c||style.Pref()) // Otherwise use the author specified
}
},
onunload:function(){ // Function to send to onunload handler
if(cookie.Sup()){ // If cookies support exists
var s=style.Get(); // Get active theme
cookie.Set('style',s,356,'/') // Write active theme to cookie
}
},
col:{} // Collection for titles
};
event.Add(style.onload); // Add onload handler
window.onunload=style.onunload; // Add onunload handler
// IE/Mac voodoo
var event={ // The Event Handler main object
Add:function(f){ // Function for adding onload handlers
event.col[event.col.length]=f; // Add event handler to collection
if(typeof window.addEventListener!='undefined') // If W3C compliant
window.addEventListener('load',f,false); // Apply event handler
else if(!event.ieSet) // Otherwise, unless already set
if(typeof document.onreadystatechange!='undefined') // If supported
document.onreadystatechange=event.onload; // Add In event handler handler
event.ieSet=true; // Specify that event handler already is set
return(typeof window.addEventListener!='undefined') // Return whether W3C compliant
},
onload:function(){ // Function for handling multiple onload handlers in IE
var m=/mac/i.test(navigator.platform); // Detect whether mac
if(typeof document.readyState!='undefined') // If supported
if(m?document.readyState!='interactive':document.readyState!='complete') // And not already finished
return; // Exit
for(var i=0,f;(f=(i<event.col.length)?event.col[i]:null);i++) // For all event handlers
f(); // Run event handler
return // Exit
},
ieSet:false, // Variable to say whether event handler is set or not
col:[] // Collection for event handlers
};
</script>
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