function layerChangeT(i) {
		this.init=function () {
			$('.layerChange').css({display:'none'});
		}
		this.first=function () {
			$('.layerControl').eq(i).addClass('current');
			$('.layerChange').eq(i).css({display:'block'});
		}
		this.normal=function () {
			$('.layerControl').click(function () {
				$('.layerControl').each(function (){
					this.className='layerControl';
				})
				this.className='layerControl current';

				$('.layerChange').css({display:'none'});
				$('.layerControl').each(function (i,n){
					if (this.className=='layerControl current')	{
						$('.layerChange').eq(i).css({display:'block'});
					};
				})
			})
		}
	}