Цепь из звезд

var your_image="testimage86.gif"

// speed
var tempo=40

// average horizontal distance between the images
var stepx=20

// average vertical distance between the images
var stepy=20

// number of images
var numberofimages=12

// do not edit the variables below
var imgpreload=new Image()
imgpreload.src=your_image
var x,y
var marginbottom
var marginleft=0
var margintop=0
var marginright
var timer
var xpos=new Array()
var ypos=new Array()
var spancontent=new Array()

for (i=0; i<=numberofimages;i++) {
xpos[i]=0
ypos[i]=0
}

for (i=0;i<=numberofimages;i++) {
spancontent[i]="<img src='"+your_image+"'>"
}

function setValues() {
var firsttimer= setTimeout("setValues2()",2000)
}

function setValues2() {
if (document.all) {
marginbottom=document.body.clientHeight-5
marginright=document.body.clientWidth-5
for (i=0;i<=numberofimages;i++) {
var thisspan = eval("document.all.span"+i)
thisspan.innerHTML=spancontent[i]
var thisspan = eval("document.all.span"+(i)+".style")
thisspan.posLeft=0
thisspan.postop=0
}
moveball()
}

if (document.layers) {
marginbottom=window.innerHeight-5
marginright=window.innerWidth-5
for (i=0;i<=numberofimages;i++) {
var thisspan=eval("document.span"+i+".document")
thisspan.write(spancontent[i])
thisspan.close()
var thisspan=eval("document.span"+i)
thisspan.left=0
thisspan.top=0
}
moveball()
}
}

function randommaker(range) {
rand=Math.floor(range*Math.random())
return rand
}

function moveball() {
if (document.all) {
checkposition()
makesnake()
document.all.span0.style.posTop+=stepy
timer=setTimeout("moveball()",tempo)
}
if (document.layers) {
checkposition()
makesnake()
document.span0.top+=stepy
timer=setTimeout("moveball()",tempo)
}
}

function makesnake() {
for (i=numberofimages; i>=1; i--) {
xpos[i]=xpos[i-1]
ypos[i]=ypos[i-1]
}
if (document.all) {
xpos[0]=document.all.span0.style.posLeft+stepx
ypos[0]=document.all.span0.style.posTop+stepy
for (i=0;i<=numberofimages;i++) {
var thisspan=eval("document.all.span"+(i)+".style")
thisspan.posLeft=xpos[i]
thisspan.posTop=ypos[i]
}
}
if (document.layers) {
xpos[0]=document.span0.left+stepx
ypos[0]=document.span0.top+stepy
for (i=0;i<=numberofimages;i++) {
var thisspan = eval("document.span"+i)
thisspan.left=xpos[i]
thisspan.top=ypos[i]
}
}
}

function checkposition() {
if (document.all) {
if (document.all.span0.style.posLeft>marginright) {
stepx=(stepx+randommaker(2))*-1
document.all.span0.style.posLeft-=1
}
if (document.all.span0.style.posLeft<marginleft) {
stepx=(stepx+randommaker(2))*-1
document.all.span0.style.posLeft+=1
}
if (document.all.span0.style.posTop>marginbottom) {
stepy=(stepy+randommaker(2))*-1
document.all.span0.style.posTop-=1
}
if (document.all.span0.style.posTop<margintop) {
stepy=(stepy+randommaker(2))*-1
document.all.span0.style.posTop+=1
}
}
if (document.layers) {
if (document.span0.left>=marginright) {
stepx=(stepx+randommaker(2))*-1
document.span0.left-=10
}
if (document.span0.left<=marginleft) {
stepx=(stepx+randommaker(2))*-1
document.span0.left+=10
}
if (document.span0.top>=marginbottom) {
stepy=(stepy+randommaker(2))*-1
document.span0.top-=10
}
if (document.span0.top<=margintop) {
stepy=(stepy+randommaker(2))*-1
document.span0.top+=10
}
}
}

// - End of JavaScript - -->
</script>