function top(){
	document.write("");
	}
	
function down(){
	document.write("");
	}
	
function changepic(index)
{
	var aaa = document.getElementById("pic_a");
	var pic = document.getElementById("pic_img");
	var jb1 = document.getElementById("jiaobiao1");
	var jb2 = document.getElementById("jiaobiao2");
	if(parseInt(index)==1)
	{
		aaa.href = "xmpx.html";
		pic.src = "images/hdjj/xmpx.gif";
		jb1.src = "images/hdjj/jbb_1.gif";
		jb2.src = "images/hdjj/jbf_2.gif";
		
		jb1.style.cursor = "default";
		jb2.style.cursor = "pointer";
		
		jb1.onclick = function(){};
		jb2.onclick = function(){changepic(2);};
	}
	else if(parseInt(index)==2)
	{
		aaa.href = "http://hi.video.sina.com.cn/you/ayjs/sign.php?dpc=1";
		pic.src = "images/hdjj/jlzs.gif";
		jb1.src = "images/hdjj/jbf_1.gif";
		jb2.src = "images/hdjj/jbb_2.gif";
		
		jb1.style.cursor = "pointer";
		jb2.style.cursor = "default";
		
		jb1.onclick = function(){changepic(1);};
		jb2.onclick = function(){};
	}
}