function initMoving(target, initTop, topLimit) { 
    if (!target) 
        return false; 
  
    var obj = target; 
    obj.initTop = initTop; 
    obj.topLimit = topLimit; 
    obj.style.position = "absolute"; 
    obj.top = obj.initTop; 
  
    obj.getTop = function() { 
        if (typeof(document.documentElement.scrollTop) == "number") { 
            return document.documentElement.scrollTop; 
        } else if (typeof(window.pageYOffset) == "number") { 
            return window.pageYOffset; 
        } else { 
            return 0; 
        } 
    } 
  
    obj.move = setInterval(function() { 
        pos = obj.getTop() + topLimit; 
        if(pos < obj.initTop) 
            pos = obj.initTop; 
        interval = obj.top - pos; 
        if (interval > 1000) { 
            obj.top = pos + 700; 
        } else if (interval < -1000) { 
            obj.top = pos - 700; 
        } else  { 
            obj.top = obj.top - interval / 3; 
        } 
        obj.style.top = obj.top + "px"; 
    }, 30) 
}

var fsize=12;
var hsize=20;

function cfont(csize) {
  cf=document.getElementById("content");
  if(csize==0){fsize=12;hsize=20;cf.style.fontSize=fsize+"px";f.style.lineHeight=hsize+"px";}
  if(csize==1){if(fsize<21){fsize=fsize+2;hsize=hsize+1;cf.style.fontSize=fsize+"px";f.style.lineHeight=hsize+"px";}else{alert("为了保证页面美观，已经最大！")}}
  if(csize==-1){if(fsize>11){fsize=fsize-2;hsize=hsize-1;cf.style.fontSize=fsize+"px";f.style.lineHeight=hsize+"px";}else{alert("为了保证页面美观，已经最小！")}}
}

function _showmore(id) {
  var id;
  div=document.getElementById("more_div_"+id);
  div2=document.getElementById("more_div2_"+id);
  span=document.getElementById("icon_more_"+id);
  if(div.style.display==""){span.innerHTML="<img src\='images\/nomore.gif' \/>";div2.style.display="";div.style.display="none";}else{span.innerHTML="<img src\='images\/more.gif' \/>";div.style.display="";div2.style.display="none";}
}