//Fade In Content Viewer: By JavaScript Kit: http://www.javascriptkit.com




var $j = jQuery.noConflict();

var fadecontentviewer={
	csszindex: 100,
	fade:function($jallcontents, togglerid, selected, speed){
		var selected=parseInt(selected)
		var $jtogglerdiv=$j("#"+togglerid)
		var $jtarget=$jallcontents.eq(selected)
		if ($jtarget.length==0){ //if no content exists at this index position (ie: stemming from redundant pagination link)
			alert("No content exists at page number "+selected+"!")
			return 
		}
		if ($jtogglerdiv.attr('lastselected')==null || parseInt($jtogglerdiv.attr('lastselected'))!=selected){
			var $jtoc=$j("#"+togglerid+" .toc")
			var $jselectedlink=$jtoc.eq(selected)
			$j("#"+togglerid+" .next").attr('nextpage', (selected<$jallcontents.length-1)? selected+1+'pg' : 0+'pg')
			$j("#"+togglerid+" .prev").attr('previouspage', (selected==0)? $jallcontents.length-1+'pg' : selected-1+'pg')
			$jtarget.css({zIndex: this.csszindex++, visibility: 'visible'})
			$jtarget.hide()
			$jtarget.fadeIn(speed)
			$jtoc.removeClass('selected')
			$jselectedlink.addClass('selected')
			$jtogglerdiv.attr('lastselected', selected+'pg')
			
		}
	},

	setuptoggler:function($jallcontents, togglerid, speed){
		var $jtoc=$j("#"+togglerid+" .toc")
		$jtoc.each(function(index){
				$j(this).attr('pagenumber', index+'pg')
		})
		
		var $jnext=$j("#"+togglerid+" .next")
		var $jprev=$j("#"+togglerid+" .prev")
		$jnext.click(function(){
			fadecontentviewer.fade($jallcontents, togglerid, $j(this).attr('nextpage'), speed)

		})
		$jprev.click(function(){
			fadecontentviewer.fade($jallcontents, togglerid, $j(this).attr('previouspage'), speed)

		})
		$jtoc.click(function(){
			fadecontentviewer.fade($jallcontents, togglerid, $j(this).attr('pagenumber'), speed)

		})
	},

	init:function(fadeid, contentclass, togglerid, selected, speed){
		$j(document).ready(function(){
			var faderheight=$j("#"+fadeid).height()
			var $jfadecontents=$j("#"+fadeid+" ."+contentclass)
			$jfadecontents.css({top: 0, left: 0, height: faderheight, visibility: 'hidden'})
			fadecontentviewer.setuptoggler($jfadecontents, togglerid, speed)
			setTimeout(function(){fadecontentviewer.fade($jfadecontents, togglerid, selected, speed)}, 100)
			$j(window).bind('unload', function(){ //clean up
				$j("#"+togglerid+" .toc").unbind('click')
				$j("#"+togglerid+" .next", "#"+togglerid+" .prev").unbind('click')
			})
		})
	}
}