/*

 */
(function( $ ){
	$.fn.k3dCarousel=function(options) {  
		return this.each(function() {
			var i=0, sin, position, newWidth, numitems, degs,
				positions=[],
				iter=0,
				w=this.offsetWidth,
				items=$(this).css('position','relative').find('div').css({
					"position" : 'absolute',
					"z-index"  : 0,
					"display"  : 'block'
				}),
				settings = {
					"r"  : w*.3, // radius of the carousel
					"cX" : w/2,  // center X of the carousel
					"cY" : this.offsetHeight/2, // center Y
					"sT" : 1000, // how long it takes to move from spot to spot
					"wT" : 10000  // how long to pause before moving again
				};
			if ( options ) { 
				$.extend( settings, options );
			}
			items.each(function(index,el){
				el.oW=el.offsetWidth;  // store the original with of the image
				el.oH=el.offsetHeight; // and the original height
				$(el).css({
					"left":settings.cX-el.oH/2,
					"top":0
				});
			});
			numitems=items.length;
			degs=Math.PI/(numitems/2);
			for (; i<numitems; ++i) { // i initialised above
				sin=Math.sin(degs*i);
				positions.push({
					"l" : settings.cX+(Math.cos(degs*i)*settings.r),
					"z" : parseInt(50*sin+50),
					"t" : sin*10+10,
					"o" : .45*sin+.55,
					"m" : .4*sin+.6,
					"f" : parseInt((50*sin+50)/8),     //parseInt(4*sin+10),
					"lh": parseInt(6*sin+15)
				});
				items[i]=$(items[i]);
			}
			function setPositions(){
				for (i=0; i<numitems; ++i) {
					position=positions[i];
					newWidth=position.m*items[i][0].oW;
					items[(i+iter)%numitems].animate(
						{
							'left':    position.l-newWidth/2,
							'top':     position.t,
							'width':   newWidth,
							'height':  position.m*items[i][0].oH,
							'font-size': position.f,
							'line-height': position.lh
						},
						settings.sT
					)
					.css('z-index',position.z);
				}
				iter++;
				setTimeout(setPositions,settings.wT+settings.sT);
			}
			setPositions();
		});
	};
})( jQuery );