<!-- 
//图片按比例缩放 
var flag=false; 
function DrawImage(ImgD,w,h){ 
 var image=new Image(); 
 var iwidth = w;
 var iheight = h;
 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; 
  } 
 } 
}  
//--> 


function showmenu(menuid)
{
whichEl = eval("menuid" + menuid);
if (whichEl.style.display == "none")
{eval("menuid" + menuid + ".style.display=\"\";");}
else
{eval("menuid" + menuid + ".style.display=\"none\";");
}
}

function newin(fname,w,h){
var win = null;
var myname="";
var scroll="yes";
LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
settings =
'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable'
win = window.open(fname,myname,settings)
}