function cdtime(container, targetdate){   
  if (!document.getElementById || !document.getElementById(container)) return  
  this.container=document.getElementById(container)   
  this.currentTime=new Date()   
  this.targetdate=new Date(targetdate)   
  this.timesup=false  
  this.updateTime()   
}   
  
cdtime.prototype.updateTime=function(){   
  var thisobj=this  
  this.currentTime.setSeconds(this.currentTime.getSeconds()+1)   
  setTimeout(function(){thisobj.updateTime()}, 1000) //update time every second   
}   
  
cdtime.prototype.displaycountdown=function(baseunit, functionref){   
  this.baseunit=baseunit   
  this.formatresults=functionref   
  this.showresults()   
}   
  
cdtime.prototype.showresults=function(){   
  var thisobj=this  
  var timediff=(this.targetdate-this.currentTime)/1000 //difference btw target date and current date, in seconds   
  if (timediff<0){ //if time is up   
    this.timesup=true  
    this.container.innerHTML=this.formatresults()   
    return  
  }   
  var oneMinute=60 //minute unit in seconds   
  var oneHour=60*60 //hour unit in seconds   
  var oneDay=60*60*24 //day unit in seconds   
  var dayfield=Math.floor(timediff/oneDay)   
  var hourfield=Math.floor((timediff-dayfield*oneDay)/oneHour)   
  var minutefield=Math.floor((timediff-dayfield*oneDay-hourfield*oneHour)/oneMinute)   
  var secondfield=Math.floor((timediff-dayfield*oneDay-hourfield*oneHour-minutefield*oneMinute))   
  if (this.baseunit=="hours"){ //if base unit is hours, set "hourfield" to be topmost level   
    hourfield=dayfield*24+hourfield   
    dayfield="n/a"  
  }   
  else if (this.baseunit=="minutes"){ //if base unit is minutes, set "minutefield" to be topmost level   
    minutefield=dayfield*24*60+hourfield*60+minutefield   
    dayfield=hourfield="n/a"  
  }   
  else if (this.baseunit=="seconds"){ //if base unit is seconds, set "secondfield" to be topmost level   
    var secondfield=timediff   
    dayfield=hourfield=minutefield="n/a"  
  }   
  this.container.innerHTML=this.formatresults(dayfield, hourfield, minutefield, secondfield)   
  setTimeout(function(){thisobj.showresults()}, 1000) //update results every second   
}   
  
/////カスタムフォーマット//////////////////////////////   
  
//Create your own custom format function to pass into cdtime.displaycountdown()   
//Use arguments[0] to access "Days" left   
//Use arguments[1] to access "Hours" left   
//Use arguments[2] to access "Minutes" left   
//Use arguments[3] to access "Seconds" left   
  
//The values of these arguments may change depending on the "baseunit" parameter of cdtime.displaycountdown()   
//For example, if "baseunit" is set to "hours", arguments[0] becomes meaningless and contains "n/a"   
//For example, if "baseunit" is set to "minutes", arguments[0] and arguments[1] become meaningless etc   
  
  
function formatresults(){   
  if (this.timesup==false){   
    var displaystring= "<font size='+3' color='red'>"    
          + arguments[0] + " </font>日 と <font size='+3' color='red'>"  
          + arguments[1] + " </font>時間 <font size='+3' color='red'>"  
          + arguments[2] + " </font>分 <font size='+3' color='red'>"  
          + arguments[3] + " </font>秒</h2>"       
  }   
  else{   
    var displaystring="2007/12/28"  
  }   
  return displaystring   
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}