/*按比例生成缩略图*/
function DrawImage(MyPic,W,H){
  var flag=false;
  var image=new Image();
  image.src=MyPic.src;
  if(image.width>0 && image.height>0){
    flag=true;
    if(image.width/image.height>= W/H){
      if(image.width>W){  
        MyPic.width=W;
        MyPic.height=(image.height*W)/image.width;
      }
	  else{
        MyPic.width=image.width;  
        MyPic.height=image.height;
      }
    }
    else{
      if(image.height>H){  
        MyPic.height=H;
        MyPic.width=(image.width*H)/image.height;     
      }
	  else{
        MyPic.width=image.width;  
        MyPic.height=image.height;
      }
    }
  }
} 
/*切换*/
function TagSwitch(one,two,three,Four){
var i=1;var j=1;
while(document.getElementById(two+i)!=null){document.getElementById(two+i).className=three;i++;}
document.getElementById(two+one).className=Four;
while(document.getElementById(two+j+"b")!=null){document.getElementById(two+j+"b").style.display="none";j++;}
document.getElementById(two+one+"b").style.display="block";
}

function GetDay(){
<!-- 
var today = new Date(); 
var week; var date; 
if(today.getDay()==0) week="星期日";
if(today.getDay()==1) week="星期一";
if(today.getDay()==2) week="星期二"; 
if(today.getDay()==3) week="星期三"; 
if(today.getDay()==4) week="星期四"; 
if(today.getDay()==5) week="星期五"; 
if(today.getDay()==6) week="星期六"; 
date=(today.getFullYear())+"年"+(today.getMonth()+1)+"月"+today.getDate()+"日"+" "; 
document.write(date+week); 
// -->	
}