/*
jQUERY FUNCTIONS
--------------------------------------------------*/

$(document).ready ( 

	function() {
		
		// SHOW / HIDE FILE BIN DETAILS
		$( '.file-infolink' ).append( '<a class="info_trigger" href="#">Show Info</a>' );
		$( '.file-info' ).hide();
		$( 'a.info_trigger' ).toggle ( 
			function() {
				$( this ).html( 'Hide Info' );
				$( this.parentNode.parentNode ).next( '.file-info' ).fadeIn( 'fast' );
				$( this.parentNode.parentNode ).addClass( 'remove-border' );
			},
			function() {
				$( this ).html( 'Show Info' );
				$( this.parentNode.parentNode ).removeClass( 'remove-border' );
				$( this.parentNode.parentNode ).next(".file-info").fadeOut("fast");
			}
		);
		
		// FIX PNG IMAGES
		$('img[@src$=.png]').ifixpng();
		
		// DROP-DOWN MENUS
		$( '#menu-dropdown li' ).hover(
			function(){ $( 'ul', this ).show(); },
			function(){ $( 'ul', this ).hide(); }
		);
		if (document.all) {
			$( '#menu-dropdown li' ).hoverClass( 'sfHover' );
		}
		
	}
	
);

// DROP-DOWN MENUS
$.fn.hoverClass = function(c) {
    return this.each(function(){
        $(this).hover( 
            function() { $(this).addClass(c);  },
            function() { $(this).removeClass(c); }
        );
    });
};

// jQuery ifixpng plugin
(function($) {
	
	/**
	 * helper variables and function
	 */
	$.ifixpng = function(customPixel) {
		$.ifixpng.pixel = customPixel;
	};
	
	$.ifixpng.getPixel = function() {
		return $.ifixpng.pixel || '/images/pixel.gif';
	};
	
	var hack = {
		ltie7  : $.browser.msie && /MSIE\s(5\.5|6\.)/.test(navigator.userAgent),
		filter : function(src) {
			return "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true,sizingMethod=crop,src='"+src+"')";
		}
	};
	
	/**
	 * Applies ie png hack to selected dom elements
	 *
	 * $('img[@src$=.png]').ifixpng();
	 * @desc apply hack to all images with png extensions
	 *
	 * $('#panel, img[@src$=.png]').ifixpng();
	 * @desc apply hack to element #panel and all images with png extensions
	 *
	 * @name ifixpng
	 */
	 
	$.fn.ifixpng = hack.ltie7 ? function() {
    	return this.each(function() {
			var $$ = $(this);
			var base = $('base').attr('href'); // need to use this in case you are using rewriting urls
			if ($$.is('img') || $$.is('input')) { // hack image tags present in dom
				if ($$.attr('src').match(/.*\.png([?].*)?$/i)) { // make sure it is png image
					// use source tag value if set 
					var source = (base && $$.attr('src').substring(0,1)!='/') ? base + $$.attr('src') : $$.attr('src');
					// apply filter
					$$.css({filter:hack.filter(source), width:$$.width(), height:$$.height()})
					  .attr({src:$.ifixpng.getPixel()})
					  .positionFix();
				}
			} else { // hack png css properties present inside css
				var image = $$.css('backgroundImage');
				if (image.match(/^url\(["']?(.*\.png([?].*)?)["']?\)$/i)) {
					image = RegExp.$1;
					$$.css({backgroundImage:'none', filter:hack.filter(image)})
					  .positionFix();
				}
			}
		});
	} : function() { return this; };
	
	/**
	 * Removes any png hack that may have been applied previously
	 *
	 * $('img[@src$=.png]').iunfixpng();
	 * @desc revert hack on all images with png extensions
	 *
	 * $('#panel, img[@src$=.png]').iunfixpng();
	 * @desc revert hack on element #panel and all images with png extensions
	 *
	 * @name iunfixpng
	 */
	 
	$.fn.iunfixpng = hack.ltie7 ? function() {
    	return this.each(function() {
			var $$ = $(this);
			var src = $$.css('filter');
			if (src.match(/src=["']?(.*\.png([?].*)?)["']?/i)) { // get img source from filter
				src = RegExp.$1;
				if ($$.is('img') || $$.is('input')) {
					$$.attr({src:src}).css({filter:''});
				} else {
					$$.css({filter:'', background:'url('+src+')'});
				}
			}
		});
	} : function() { return this; };
	
	/**
	 * positions selected item relatively
	 */
	 
	$.fn.positionFix = function() {
		return this.each(function() {
			var $$ = $(this);
			var position = $$.css('position');
			if (position != 'absolute' && position != 'relative') {
				$$.css({position:'relative'});
			}
		});
	};

})(jQuery);