Bối cảnh thay đổi hiệu ứng màu sắc của trang web

<!—---Tổng hợp code HTML - Copyright Mạnh Hạo Nhiên---> <script>

// Select fade-effect below:

// Set 1 if the background may fade from dark to medium // Set 2 if the background may fade from light to medium

// Set 3 if the background may fade from very dark to very light light // Set 4 if the background may fade from light to very light

// Set 5 if the background may fade from dark to very dark

var fade_effect=3

// What type of gradient should be applied Internet Explorer 5x or higher? // Set "none" or "horizontal" or "vertical"

var gradient_effect="horizontal" // Speed higher=slower

var speed=60

/////////////////////////////////////////////////////////////////////////// // CONFIGURATION ENDS HERE

///////////////////////////////////////////////////////////////////////////

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() }

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+blueco l_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>