/*****************滑动标签功能******************/

/*定义switchTag对象*/
function switchTag(){
}

/*定义switchTag的方法（实现标签切换功能）*/
switchTag.prototype.st = function(arrMenu,arrContent,onClass,normalClass){
	var _this = this;
	for(var i=0 ; i<arrMenu.length ; i++){
		_this.g(arrMenu[i]).value = i;
		_this.g(arrMenu[i]).onmouseover = function(){
			for(var j=0 ; j<arrMenu.length ; j++){
				_this.g(arrMenu[j]).className = normalClass;
				_this.g(arrContent[j]).style.display = "none";
			}
			_this.g(arrMenu[this.value]).className = onClass;
			_this.g(arrContent[this.value]).style.display = "block";
		}
	}
};

/*定义switchTag的方法（获取对象的id）*/
switchTag.prototype.g = function(o){
	return document.getElementById(o);
};

/*****************滚动图片******************/
i=13;
function ProImgScroll(a){
	if(i){
		//prev.src="images/scroll_arr_left.gif";
		ProImg.scrollLeft+=10*a;
		i--;
		setTimeout(function(){ProImgScroll(a)},0.1);
	}
	else {
		i=13;
		next.src="images/scroll_arr_right.gif";
		prev.src="images/scroll_arr_left.gif";
		if (ProImg.scrollLeft==0){
			prev.src="images/scroll_arr_left_gray.gif";
		}else if(ProImg.scrollLeft+ProImg.offsetWidth>=ProImg.getElementsByTagName("table")[0].offsetWidth){
			next.src="images/scroll_arr_right_gray.gif";
		}
	}
}


/*****************页面加载时调用******************/
window.onload = function (){
	//标签切换
	var oTag01 = new switchTag();  /*艺考实用信息（艺考咨询）Tag*/
	oTag01.st(["lphb_1","lphb_2"],["lphb_1c","lphb_2c"],"bq01","bq02");
	var oTag02 = new switchTag();  /*艺考快讯（各地动态 ）Tag*/
	oTag02.st(["cnews1_1","cnews1_2","cnews1_3","cnews1_4"],["cnews1_1c","cnews1_2c","cnews1_3c","cnews1_4c"],"bq01","bq02");
	var oTag03 = new switchTag();  /*艺考实用信息（艺考咨询）Tag*/
	oTag03.st(["lphb02_1","lphb02_2"],["lphb02_1c","lphb02_2c"],"bq01","bq02");
	//滚动新闻
	var oScrollPrev = document.getElementById("scrollPrev");
	var oScrollNext = document.getElementById("scrollNext");
	oScrollPrev.onclick = function(){
		ProImgScroll(-1);
	}
	oScrollNext.onclick = function(){
		ProImgScroll(1);
	}	
}