/*=============第一页=============*/	
canvas {
	width:100%;height:auto/*默认全屏显示 可自己设置高度640px*/;
	display:inline-block;vertical-align:baseline
	position:absolute;
	z-index:-1;
	}
.canvaszz{  /*用来解决视频右键菜单，用于视频上面的遮罩层*/
	width:100%;
	background-image: url(views/IMJ2V2/images/banner2.jpg);
	background-size: 100%;
	height:auto;
	background-repeat:no-repeat;
	position:absolute;
	z-index:10;
		filter:alpha(opacity=40);  
      	-moz-opacity:0.4;  
      	-khtml-opacity: 0.4;  
      	opacity: 0.4;
	}