<script type="text/javascript">
// Efekt türü
// 1: Koyudan normale
// 2: Açıktan normale
// 3: Çok koyudan çok açığat
// 4: Açıktan çok açığa
// 5: Koyudan çok koyuya
var fade_effect=3

// Gradyan doğrultusu. Yatay, dikey veya hiç
// none / horizontal / vertical
var gradient_effect="horizontal"

// Hız
var speed=60

var browserinfos=navigator.userAgent 
var ie4=document.all&&!document.getElementById
var ie5=document.all&&document.getElementById&&!browserinfos.match(/Opera/)
var ns4=document.layers
var ns6=document.getElementById&&!document.all
var opera=browserinfos.match(/Opera/)  
var browserok=ie4||ie5||ns4||ns6||opera

if (fade_effect==1) {
     var darkmax=1
     var lightmax=127
}
if (fade_effect==2) {
     var darkmax=127
     var lightmax=254
}
if (fade_effect==3) {
     var darkmax=1
     var lightmax=254
}
if (fade_effect==4) {
     var darkmax=190
     var lightmax=254
}
if (fade_effect==5) {
     var darkmax=1
     var lightmax=80
}
var hexc = new Array('0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F')

var newred
var newgreen
var newblue
var oldred
var oldgreen
var oldblue

var redcol_1
var redcol_2 
var greencol_1 
var greencol_2 
var bluecol_1 
var bluecol_2 
var oldcolor
var newcolor
var firsttime=true
 
var stepred=1
var stepgreen=1
var stepblue=1

function setrandomcolor() {
     var range=(lightmax-darkmax)
     if (firsttime) {
          newred=Math.ceil(range*Math.random())+darkmax
          newgreen=Math.ceil(range*Math.random())+darkmax
          newblue=Math.ceil(range*Math.random())+darkmax
          firsttime=false
     }
     
     oldred=Math.ceil(range*Math.random())+darkmax
     oldgreen=Math.ceil(range*Math.random())+darkmax
     oldblue=Math.ceil(range*Math.random())+darkmax
     
     stepred=newred-oldred
     if (oldred>newred) {stepred=1}
     else if (oldred<newred) {stepred=-1}
     else {stepred=0}
     
     stepgreen=newgreen-oldgreen
     if (oldgreen>newgreen) {stepgreen=1}
     else if (oldgreen<newgreen) {stepgreen=-1}
     else {stepgreen=0}
     
     stepblue=newblue-oldblue
     if (oldblue>newblue) {stepblue=1}
     else if (oldblue<newblue) {stepblue=-1}
     else {stepblue=0}
     fadebg()
}

function fadebg() {
     if (newred==oldred) {stepred=0}
     if (newgreen==oldgreen) {stepgreen=0}
     if (newblue==oldblue) {stepblue=0}
     newred+=stepred
     newgreen+=stepgreen
     newblue+=stepblue
     
     if (stepred!=0 || stepgreen!=0 || stepblue!=0) {
           redcol_1 = hexc[Math.floor(newred/16)];
          redcol_2 = hexc[newred%16];
      greencol_1 = hexc[Math.floor(newgreen/16)];
           greencol_2 = hexc[newgreen%16];
       bluecol_1 = hexc[Math.floor(newblue/16)];
           bluecol_2 = hexc[newblue%16];
            newcolor="#"+redcol_1+redcol_2+greencol_1+greencol_2+bluecol_1+bluecol_2
          if (ie5 && gradient_effect!="none") {
               if (gradient_effect=="horizontal") {gradient_effect=1}
               if (gradient_effect=="vertical") {gradient_effect=0}
                greencol_1 = hexc[Math.floor(newred/16)];
               greencol_2 = hexc[newred%16];
                bluecol_1 = hexc[Math.floor(newgreen/16)];
                bluecol_2 = hexc[newgreen%16];
                 redcol_1 = hexc[Math.floor(newblue/16)];
                redcol_2 = hexc[newblue%16];
               var newcolorCompl="#"+redcol_1+redcol_2+greencol_1+greencol_2+bluecol_1+bluecol_2
               document.body.style.filter="progid:DXImageTransform.Microsoft.Gradient(startColorstr="+newcolorCompl+", endColorstr="+newcolor+" GradientType="+gradient_effect+")"
          }
          else {
                 document.bgColor=newcolor 
          }
          var timer=setTimeout("fadebg()",speed);
    } 
       else {
            clearTimeout(timer)
          newred=oldred
          newgreen=oldgreen
          newblue=oldblue
          oldcolor=newcolor
          setrandomcolor()
       }
}

if (browserok) {
     window.onload=setrandomcolor
}
</script>