// Base64 - Encode 

var keyStr = "ABCDEFGHIJKLMNOP" +
                "QRSTUVWXYZabcdef" +
                "ghijklmnopqrstuv" +
                "wxyz0123456789+/" +
                "=";

function encode64(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);
        chr1 = chr2 = chr3 = "";
        enc1 = enc2 = enc3 = enc4 = "";
    } while (i < input.length);

    return output;
}


/* TextImage */
jQuery.fn.jQIR = function(format, path, onload) {
    if (!document.images) return this;
    path = path || "";
    this.each(
		function() {
		    var img = $("<img>"), el = jQuery(this);
		    var file;
		    var re = /(?:{src\:)(\S+)(?:})/i;
		    var m = this.className.match(re);
		    if (m) {
		        file = path + m[1];
		    }
		    else {
		        file = path + encode64(this.innerHTML.replace("<BR>", "\n").replace("<br>", "\n").replace("&amp;", "&")) + "." + format;
		    }

		    jQuery(img).attr(
			{
			    src: file,
			    alt: el.text()
			}).load(typeof onload == "function" ? onload : function() { });
		    var a = el.find("a");
		    var toAppend = a.length ? a.empty().append(img) : img;
		    el.empty().append(toAppend);
		}
	)
    return this;
}