// JavaScript Document
  function changeClassName(div,sClassname){
	    document.getElementById(div).className=sClassname;
  }

function setImgSizeWH(theURL,sImage,imgW,imgH){
	 var imgObj;imgObj=new Image();
	 imgObj.src=theURL;
	 if((imgObj.width!=0)&&(imgObj.height!=0)){
		 if(imgObj.width>imgW||imgObj.height>imgH){
			 var iHeight=imgObj.height*imgW/imgObj.width;
			 if(iHeight<=imgH){
				  sImage.width=imgW;sImage.height=iHeight;
			 }else{
				 var iWidth=imgObj.width*imgH/imgObj.height;sImage.width=iWidth;sImage.height=imgH;
			 }
		 }else{
			 sImage.width=imgObj.width;sImage.height=imgObj.height;
		 }
	 }else{
		 sImage.width=imgW;sImage.height=imgH;
	 }
}


// JavaScript Document
//var flag=false; 
function DrawImage(ImgD,www,hhh){
  var image=new Image();
  var iwidth = www;//150; //定义允许图片宽度
  var iheight = hhh;//140; //定义允许图片高度
  image.src=ImgD.src;
  if(image.width>0 && image.height>0){
     flag=true;
     if(image.width/image.height>= iwidth/iheight){
        if(image.width>iwidth){ 
           ImgD.width=iwidth;
           ImgD.height=(image.height*iwidth)/image.width;
        }else{
           ImgD.width=image.width; 
           ImgD.height=image.height;
        }
        //ImgD.alt=image.width+"×"+image.height;
     }else{
        if(image.height>iheight){ 
          ImgD.height=iheight;
          ImgD.width=(image.width*iheight)/image.height; 
        }else{
          ImgD.width=image.width; 
          ImgD.height=image.height;
        }
      //ImgD.alt=image.width+"×"+image.height;
     }
  }
}