function changeShow(id){
	var a=new Array("报价","资讯","评论","焦点");
	for(var i=1;i<=4;i++){
		if(i==parseInt(id)){
			document.getElementById("relativeArt"+i).style.display="";
			document.getElementById("tab"+i).className="actived";
			document.getElementById("relativeTitle").innerHTML=a[i-1];
		}
		else{
			document.getElementById("relativeArt"+i).style.display="none";
			document.getElementById("tab"+i).className="";
		}
	}
}
function changePlas(id){
	for(var i=1;i<=4;i++){
		if(i==parseInt(id)){
			document.getElementById("plas"+i).style.display="";
			document.getElementById("p"+i).className="current";
		}
		else{
			document.getElementById("plas"+i).style.display="none";
			document.getElementById("p"+i).className="";
		}
	}
}
function slideLine(ul, delay, speed, lh) {
	var slideBox = (typeof ul == 'string')?document.getElementById(ul):ul;
	var delay = delay||1000, speed=speed||20, lh = lh||20;
	var tid = null, pause = false;
	var start = function() {
		tid=setInterval(slide, speed);
	}
	var slide = function() {
		if (pause) return;
		slideBox.scrollTop += 2;	
		if (slideBox.scrollTop % lh == 0) {
			clearInterval(tid);
			slideBox.appendChild(slideBox.getElementsByTagName('li')[0]);
			slideBox.scrollTop = 0;
			setTimeout(start, delay);
		}
	}
	slideBox.onmouseover=function(){pause=true;}
	slideBox.onmouseout=function(){pause=false;}
	setTimeout(start, delay);
}