function resizeImage(obj, MaxW, MaxH)
{
 var imageObject = obj;
    var state = imageObject.readyState;
 if(state!='complete') 
 {
        setTimeout("resizeImage("+imageObject+","+MaxW+","+MaxH+")",50);
  return;
    }
    var oldImage = new Image();
    oldImage.src = imageObject.src;
    var dW = oldImage.width; 
    var dH = oldImage.height;
    if(dW>MaxW || dH>MaxH) 
 {
        a = dW/MaxW; b = dH/MaxH;
        if( b>a ) a = b;
        dW = dW/a; dH = dH/a;
    }
    if(dW > 0 && dH > 0) 
 {
        imageObject.width = dW;
  imageObject.height = dH;
 }
}


//图片大小随滚轮变化
function bbimg(o){
var zoom=parseInt(o.style.zoom, 10)||100;zoom+=event.wheelDelta/12;if (zoom>0) o.style.zoom=zoom+'%';
return false;
}

//图片连续向左滚动
function scrollleft(speed,box,target,target2){
var speed3=speed//速度数值越大速度越慢
var demo1=target;
var demo2=target2;
var demo=box;
demo2.innerHTML=demo1.innerHTML
function Marquee(){
if(demo2.offsetWidth-demo.scrollLeft<=0)
demo.scrollLeft-=demo1.offsetWidth
else{
demo.scrollLeft++
}
}
var MyMar=setInterval(Marquee,speed3)
demo.onmouseover=function() {clearInterval(MyMar)}
demo.onmouseout=function() {MyMar=setInterval(Marquee,speed3)}
}