var bg="",hour=(new Date()).getHours()

function changeBGI() {
if(hour>=24||hour<4){
// 24-4
document.body.style.backgroundImage="url(back/01.jpg)"
}else if(hour<8){
// 4-8
document.body.style.backgroundImage="url(back/02.jpg)"
}else if(hour<12){
// 8-12
document.body.style.backgroundImage="url(back/03.jpg)"
}else if(hour<16){
// 12-16
document.body.style.backgroundImage="url(back/04.jpg)"
}else if(hour<20){
// 16-20
document.body.style.backgroundImage="url(back/05.jpg)"
}else if(hour<24){
// 20-24
document.body.style.backgroundImage="url(back/06.jpg)"
}else{
// default
document.body.style.backgroundImage="url(back/04.jpg)"
}
}

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];}
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}