// Depencias Jquery + Jquery.easing.1.3 + Jquery.mousewheel
var debug = true
var GA = function(pt) { for(var k in pt) this[k]=pt[k] }
GA.prototype = {
	'_xMover':0,
	'idContent':'',
	'idMascara':'',
	'btMais':'',
	'btMenos':'',
	'twening':false,
	'ease':'easeInOutBack',

	'create':function(){
		var ObjThis = this

		$('#'+this.idMascara).mousewheel(function(event, delta) {
			event.stopPropagation()
		    event.preventDefault()
			if (delta > 0) ObjThis.changePage(1)
			else ObjThis.changePage(-1)
		})

		$("#"+this.btMais).css('cursor', 'pointer')
		$("#"+this.btMais).click(function(){
			ObjThis.changePage(-1)
		})

		$("#"+this.btMenos).css('cursor', 'pointer')
		$("#"+this.btMenos).click(function(){
			ObjThis.changePage(1)
		})
	},

	'changePage':function(op){
		var WC = $('#'+this.idContent).width()
		var WM = $('#'+this.idMascara).width()
		var TOTAL_OUT = (WC-WM)
		
		if (TOTAL_OUT < 0) TOTAL_OUT = 0

		var posX = parseInt($('#'+this.idContent).css('left'))

		if(posX >= 0 && op == 1)return false
		else{
			posX += this._xMover*op
			
			if (posX < (TOTAL_OUT*-1)) return false

			var ObjThis = this
			
			if (this.twening) return false
			this.twening = true

			$('#'+this.idContent).stop().animate({ 
				left:posX
			}, 500, this.ease, function(){
				ObjThis.twening = false
			})
		}
	}
}