function changeBody(x,y,z)
{
//document.getElementById('news_kuan_'+z).className = "aaaa";
document.getElementById('news_kuan_id_'+x).style.display = "";  
document.getElementById('news_kuan_id_'+y).style.display = "none"; 
//return false;
}
function pic_wh(img,w,h){
image=new Image()
image.src=img.src
width=image.width
height=image.height
if(width>height){
img.width=w
}else{
img.height=h
}
}