//Javascript for slide image
var global_transitions=[ //array of IE transition strings
	"progid:DXImageTransform.Microsoft.Barn()",
	"progid:DXImageTransform.Microsoft.Blinds()",
	"progid:DXImageTransform.Microsoft.CheckerBoard()",
	"progid:DXImageTransform.Microsoft.Fade()",
	"progid:DXImageTransform.Microsoft.GradientWipe()",
	"progid:DXImageTransform.Microsoft.Inset()",
	"progid:DXImageTransform.Microsoft.Iris()",
	"progid:DXImageTransform.Microsoft.Pixelate(maxSquare=15)",
	"progid:DXImageTransform.Microsoft.RadialWipe()",
	"progid:DXImageTransform.Microsoft.RandomBars()",
	"progid:DXImageTransform.Microsoft.RandomDissolve()",
	"progid:DXImageTransform.Microsoft.Slide()",
	"progid:DXImageTransform.Microsoft.Spiral()",
	"progid:DXImageTransform.Microsoft.Stretch()",
	"progid:DXImageTransform.Microsoft.Strips()",
	"progid:DXImageTransform.Microsoft.Wheel()",
	"progid:DXImageTransform.Microsoft.Zigzag()"
]

function flashyslideshow(setting)
{
	this.textid = setting.textid
	this.wrapperid=setting.wrapperid
	this.imagearray=setting.imagearray
	this.pause=setting.pause
	this.transduration=setting.transduration/1000 //convert from miliseconds to seconds unit to pass into el.filters.play()
	this.currentimg=0
	var preloadimages=[] //temp array to preload images
	for (var i=0; i<this.imagearray.length; i++)
		{
			preloadimages[i]=new Image()
			preloadimages[i].src=this.imagearray[i][0]
		}
	document.write('<div id="'+this.wrapperid+'" class="'+setting.wrapperclass+'"><div id="'+this.wrapperid+'_inner" style="width:100%">'+this.getSlideHTML(this.currentimg)+'</div></div>')
	var effectindex=Math.floor(Math.random()*global_transitions.length) //randomly pick a transition to utilize
	var contentdiv=document.getElementById(this.wrapperid+"_inner")
	if (contentdiv.filters)  //if the filters[] collection is defined on element (only in IE)
		{
			contentdiv.style.filter=global_transitions[effectindex] //define transition on element
			this.pause+=setting.transduration //add transition time to pause
		}
	this.filtersupport=(contentdiv.filters && contentdiv.filters.length>0)? true : false //test if element supports transitions and has one defined
	var slideshow=this
	flashyslideshow.addEvent(contentdiv, function(){slideshow.isMouseover=1}, "mouseover")
	flashyslideshow.addEvent(contentdiv, function(){slideshow.isMouseover=0}, "mouseout")
	setInterval(function(){slideshow.rotate()}, this.pause)
}

flashyslideshow.addEvent=function(target, functionref, tasktype){
	if (target.addEventListener)
		target.addEventListener(tasktype, functionref, false);
	else if (target.attachEvent)
		target.attachEvent('on'+tasktype, function(){return functionref.call(target, window.event)});
},

flashyslideshow.setopacity=function(el, degree){ //sets opacity of an element (FF and non IE browsers only)
	if (typeof el.style.opacity!="undefined")
		el.style.opacity=degree
	else
		el.style.MozOpacity=degree
	el.currentopacity=degree
},

flashyslideshow.prototype.getSlideHTML=function(index){	
	var slideHTML=(this.imagearray[index][1])? '<a href='+this.imagearray[index][1]+'" target="'+this.imagearray[index][2]+'">\n' : '' //hyperlink slide?
	slideHTML+='<div style="background-image:url(images/'+this.imagearray[index][0]+'); background-repeat:no-repeat">'
	slideHTML+=(this.imagearray[index][3])? '<div  class="'+this.textid+'">'
					+ this.imagearray[index][3] +
					'</div></div></a>' : ''	//text description?
	return slideHTML //return HTML for the slide at the specified index
}

flashyslideshow.prototype.rotate=function(){
	var contentdiv=document.getElementById(this.wrapperid+"_inner")
	if (this.isMouseover){ //if mouse is over slideshow
		return
	}
	this.currentimg=(this.currentimg<this.imagearray.length-1)? this.currentimg+1 : 0
	if (this.filtersupport){
		contentdiv.filters[0].apply()
	}
	else	{
		flashyslideshow.setopacity(contentdiv, 0)
	}
	contentdiv.innerHTML=this.getSlideHTML(this.currentimg)
	
	if (this.filtersupport)	{
		contentdiv.filters[0].play(this.transduration)
	}
	else	{
		contentdiv.fadetimer=setInterval(function()
		{
			if (contentdiv.currentopacity<1)
				flashyslideshow.setopacity(contentdiv, contentdiv.currentopacity+0.1)
			else
				clearInterval(contentdiv.fadetimer)
		}, 50) //end setInterval
	}
}