//让左右两侧的height一样

  window.onload = function(){
    var h1 = document.getElementById("lefttype").offsetHeight;
    var h2 = document.getElementById("rightinfo").offsetHeight;
    if(h1 > h2){
        document.getElementById("rightinfo").style.height = h1+"px";
        document.getElementById("lefttype").style.height = h1+"px";
        }
    else{
        document.getElementById("lefttype").style.height = h2+"px";
        document.getElementById("rightinfo").style.height = h2+"px";
        }
    }
    

//显示与隐藏div块
function showD(showid,currid){
        if(document.getElementById(showid).style.display=="none"){
            document.getElementById(showid).style.display = "block";
            currid.className = "typetitle";
        }
        else{
            document.getElementById(showid).style.display = "none";
            currid.className += " currtitle";
        }
    } 
    
    
//图片等比例缩放
function DrawImage(ImgD,FitWidth,FitHeight) 
{ 
var image=new Image(); 
image.src=ImgD.src; 
if(image.width>0 && image.height>0) 
{ 
if(image.width/image.height>= FitWidth/FitHeight) 
{ 
if(image.width>FitWidth) 
{ 
ImgD.width=FitWidth; 
ImgD.height=(image.height*FitWidth)/image.width; 
} 
else 
{ 
ImgD.width=image.width; 
ImgD.height=image.height; 
} 
} 
else 
{ 
if(image.height>FitHeight) 
{ 
ImgD.height=FitHeight; 
ImgD.width=(image.width*FitHeight)/image.height; 
} 
else 
{ 
ImgD.width=image.width; 
ImgD.height=image.height; 
} 
} 
} 
}