/*
 * Cookie Management
 * */
// Get Cookie
function get_cookie(name)
{
	if(document.cookie.length > 0)
	{
		start = document.cookie.indexOf(name + "=");
		if(start != -1)
		{
			start = start + name.length+1;
			end = document.cookie.indexOf(";", start);
			
			if(end == -1)
				end = document.cookie.length;
			
			return unescape(document.cookie.substring(start, end));
		}
	}
	return "";
}

// Set Cookie
function set_cookie(name, value, expire_in_days)
{
	var expire = new Date();
	expire.setDate(expire.getDate() + expire_in_days);
	document.cookie = name+ "=" + escape(value) + ((expire_in_days == null) ? "" : ";expires=" + expire.toGMTString());
}

/*
 * URL, e-mail stuff
 * */
// Delayed URL jump
function delayed_jump(_url, _delay)
{
	window.setTimeout("top.window.location=\"" + _url + "\";", _delay); 
}

// Confirmirming to jump to an URL?
function link_confirm(_url, _question)
{
	ans = confirm(_question);

	if(ans)
		location = _url;
}

// Mailto without revealing the users address
function level(user, domain)
{
	window.top.location = "mailto:" + base64_decode(user) + "@" + base64_decode(domain);
}

// Writing the mail address
function cim(user, domain)
{
	prompt("E-mail:", base64_decode(user) + "@" + base64_decode(domain));
}

/*
 * Upload
 * */
// Toggle Upload iFrame
function toggle_upload()
{
	i = document.getElementById("upload-iframe");
	if(i.getAttribute("class") == "iframe-hidden")
	{
		i.setAttribute("class", "iframe-visible");
		i.src = i.src;
	}
	else
		i.setAttribute("class", "iframe-hidden");
}

/*
	Base64
	=======
*/
var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";

function base64_encode(input)
{
	var output = "";
	var chr1, chr2, chr3;
	var enc1, enc2, enc3, enc4;
	var i = 0;
	
	do
	{
	  chr1 = input.charCodeAt(i++);
	  chr2 = input.charCodeAt(i++);
	  chr3 = input.charCodeAt(i++);
	
	  enc1 = chr1 >> 2;
	  enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
	  enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
	  enc4 = chr3 & 63;
	
	  if(isNaN(chr2))
	  {
	     enc3 = enc4 = 64;
	  }
	  else if(isNaN(chr3))
	  {
	     enc4 = 64;
	  }
	
	  output = output + keyStr.charAt(enc1) + keyStr.charAt(enc2) + keyStr.charAt(enc3) + keyStr.charAt(enc4);
	}
	while(i < input.length);
	
	return output;
}

function base64_decode(input)
{
	var output = "";
	var chr1, chr2, chr3;
	var enc1, enc2, enc3, enc4;
	var i = 0;
	
	input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
	
	do
	{
	  enc1 = keyStr.indexOf(input.charAt(i++));
	  enc2 = keyStr.indexOf(input.charAt(i++));
	  enc3 = keyStr.indexOf(input.charAt(i++));
	  enc4 = keyStr.indexOf(input.charAt(i++));
	
	  chr1 = (enc1 << 2) | (enc2 >> 4);
	  chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
	  chr3 = ((enc3 & 3) << 6) | enc4;
	
	  output = output + String.fromCharCode(chr1);
	
	  if(enc3 != 64)
	  {
	     output = output + String.fromCharCode(chr2);
	  }
	  if(enc4 != 64)
	  {
	     output = output + String.fromCharCode(chr3);
	  }
	}
	while(i < input.length);
	
	return output;
}