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Set the time change of the image on the webpage

Source: Internet
Author: User
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<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head>
<Meta http-equiv = "Content-Type" content = "text/html; charset = UTF-8"/>
<Title> image effect </title>
</Head>

<Body>

<Style>
. A1 {FILTER: alpha (opacity = 100); width: 100%; height: 100%}
. A2 {FILTER: alpha (opacity = 90); width: 80%; height: 80%}
. A3 {FILTER: alpha (opacity = 80); width: 70%; height: 70%}
. A4 {FILTER: alpha (opacity = 70); width: 60%; height: 60%}
. A5 {FILTER: alpha (opacity = 60); width: 50%; height: 50%}
. A6 {FILTER: alpha (opacity = 50); width: 40%; height: 40%}
. A7 {FILTER: alpha (opacity = 40); width: 30%; height: 30%}
. A8 {FILTER: alpha (opacity = 30); width: 20%; height: 20%}
. A9 {FILTER: alpha (opacity = 20); width: 10%; height: 10%}
. A10 {FILTER: alpha (opacity = 0); width: 0; height: 0}

</Style>

<Body>
<Div id = "fu">
<Div style = "POSITION: relative; width: 100px; height: 100px" id = "banner">
<A href = "#"> </a>
<A href = "#"> </a>
<A href = "#"> </a>
<A href = "#"> </a>
<A href = "#"> </a>
<A href = "#"> </a>
<A href = "#"> </a>
<A href = "#"> </a>

</Div>

</Div>
<A href = "#" onclick = "(fu. style. display = 'None ')? Fu. style. display = 'block': fu. style. display = 'none'; "> hide or show </a>
</Body>

<Script>
Var banner = document. getElementById ("banner"); // obtain the parent container
Var img = banner. getElementsByTagName ("IMG"); // obtain the IMG in the container
Var I = 0; // mark the currently displayed IMG
DisplayFlag = true; // indicates whether the outermost container is hidden.
Function checkDisplay (obj) {// loop banner's parent element. Exit the method if any layer is hidden.
While (obj. parentNode. tagName! = "BODY "){
Obj = obj. parentNode;
If (obj. style! = Null)
If (obj. offsetWidth = 0 | obj. style. display = "none" | obj. style. visibility = "hidden "){
Var imagesss = document. getElementById ("banner"). getElementsByTagName ("IMG ");

For (var fr = 0; fr <imagesss. length; fr ++ ){
Imagesss [fr]. style. visibility = "hidden ";
}
Return displayFlag = false;
}
Else
Return displayFlag = true;
}
}
Function change (){
Img = banner. getElementsByTagName ("IMG"); // obtain the IMG in the container
C = 1; // defines the className
Var t = null; // defines the timer.
T = setInterval (function (){
CheckDisplay (banner); // you can check whether the image is hidden once before running.
If (c = 10 |! DisplayFlag) // when a loop ends or is hidden, the timer is cleared.
{
Return clearInterval (t); // exit method at the same time
}
If (c! = 9) // currently, there are only 10 styles, and the cycle ends after 9.
{
Img [I]. className = "a" + c; // define a new CLASSNAME
Img [I]. style. display = 'inline'; // define the image as the display status.
Img [I]. style. visibility = 'visible ';
Img [I]. style. left = banner. offsetWidth-img [I]. offsetWidth; // right the image
}
Else {
IMG [I]. style. Left = 0; // to hide the image, first place the image to the left
IMG [I]. classname = "A1"; // restore classname
IMG [I]. style. Display = "NONE"; // hide
IMG [I]. style. Visibility = 'den den ';
}
If (I = IMG. Length-1) {// processing when the image loops to the last one
IMG [0]. style. Left = 0;
IMG [0]. style. Display = "inline"; // control the display of 1st Images
IMG [0]. style. Visibility = 'visible ';
IMG [0]. classname = "A" + (10-c); // defines the classname of the 1st Images
}
Else {
// Otherwise, change the next image of I.
IMG [I + 1]. style. Left = 0;
IMG [I + 1]. style. Display = "inline ";
IMG [I + 1]. style. Visibility = 'visable ';
IMG [I + 1]. classname = "A" + (10-c );
}

C ++; // STYLE tag

}, 100); // 0. Change once per second
I ++;
If (I> = IMG. Length) {// loop to the last one, the I will be 0
I = 0;
}
}
Change ();
SetInterval (change, 2000); // Timer

</Script>
<! -- The image conversion effect ends -->
</Body>
</Html>

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