function getObject(objectId) {
 if(document.getElementById && document.getElementById(objectId)) { 
 return document.getElementById(objectId);
 }
 else if (document.all && document.all(objectId)) {
 return document.all(objectId);
 }
 else if (document.layers && document.layers[objectId]) {
 return document.layers[objectId];
 }
 else {
 return false;
 }
}

var yuans="";
function xty(sbut,n,num){
if(yuans==n) return;
for(i=1;i<=num;i++){ getObject(sbut+i).style.display="none"; }
getObject(sbut+n).style.display="block";
yuans=n;
}

function showHide(node,objname){
    var obj = getObj(objname);
    if(obj.style.display == "none"){
	    obj.style.display = "block";
		node.childNodes[0].src = "img/yy1.gif";
	}else{
		obj.style.display = "none";
		node.childNodes[0].src = "img/xx1.gif";
	}
}


var fgg=0; 
var flag=false; 

function DrawImage(ImgD,wid,hig){ 
 var image=new Image(); 
 image.src=ImgD.src; 
 if(image.width>0 && image.height>0){ 
  flag=true; 
  if(image.width/image.height>= 1){ 
   if(image.width>wid){
    ImgD.width=wid; 
    ImgD.height=(image.height*wid)/image.width; 
   }else{ 
    ImgD.width=image.width;
    ImgD.height=image.height; 
   } 
   ImgD.alt="点击查看..."; 
  } 
  else{ 
   if(image.height>hig){
    ImgD.height=hig; 
    ImgD.width=(image.width*hig)/image.height; 
   }else{ 
    ImgD.width=image.width;
    ImgD.height=image.height; 
   } 
   ImgD.alt="点击查看..."; 
  } 
 }
}