/* 	
Plugin: iframe autoheight jQuery Plugin 
Author: original code by NATHAN SMITH; converted to plugin by Jesse House
File: jquery.iframe-auto-height.plugin.js
Description: when the page loads set the height of an iframe based on the height of its contents
Remarks: original code from http://sonspring.com/journal/jquery-iframe-sizing    
Version: 1.0.0 - see README: http://github.com/house9/jquery-iframe-auto-height
*/
(function($) {
    $.fn.iframeAutoHeight = function(options) {
        // set default option values
        var options = $.extend({
            heightOffset: 0
        }, options);

        // iterate over the matched elements passed to the plugin
        $(this).each(function() {
            // Check if browser is Opera or Safari(Webkit so Chrome as well)
            if ($.browser.safari || $.browser.opera) {
                // Start timer when loaded.
                $(this).load(function() {
                    var iframe = this;
                    var delayedResize = function() {
                        resizeHeight(iframe);
                    };
                    setTimeout(delayedResize, 300);
                });
                $(this).resize(function() {
                    var iframe = this;
                    var delayedResize = function() {
                        resizeHeight(iframe);
                    };
                    setTimeout(delayedResize, 300);
                });
                // Safari and Opera need a kick-start.
                var source = $(this).attr('src');
                $(this).attr('src', '');
                $(this).attr('src', source);
            }
            else {
                // Resize first
                resizeHeight(this);

                // Start timer when loaded.
                $(this).load(function() {
                    var iframe = this;
                    var delayedResize = function() {
                        resizeHeight(iframe);
                    };
                    setTimeout(delayedResize, 200);
                });
                // Start timer when loaded.
                $(this).resize(function() {
                    var iframe = this;
                    var delayedResize = function() {
                        resizeHeight(iframe);
                    };
                    setTimeout(delayedResize, 200);
                });
            }

            // resizeHeight
            function resizeHeight(iframe) {
                // Set inline style to equal the body height of the iframed content plus a little
                try {
                    var dBody = iframe.contentWindow.document.body;
                    var bodyoffsetHeight = dBody.offsetHeight;
                    if (bodyoffsetHeight == 0) {
                        bodyoffsetHeight = dBody.scrollHeight;
                    }
                    if (bodyoffsetHeight == 0 && iframe.contentWindow && iframe.contentWindow.outerHeight) {
                        bodyoffsetHeight = iframe.contentWindow.outerHeight;
                    }
                    if (bodyoffsetHeight == 0) {
                        var delayedResize = function() {
                            resizeHeight(iframe);
                        };
                        setTimeout(delayedResize, 1000);
                        return;
                    }

                    var newHeight = bodyoffsetHeight + options.heightOffset;
                    iframe.style.height = newHeight + 'px';
                }
                catch (e) {
                    var delayedResize = function() {
                        resizeHeight(iframe);
                    };
                    setTimeout(delayedResize, 1000);
                    return;
                }
            }

        }); // end
    }
})(jQuery);