[Couplet advertisement] JS Script class _javascript Skills

//****************************************************************************************
& Author: Wah Yu
& Date: December 31, 2004
& Website: http://www.13smile.com/
& Blog:http://blog.csdn.net/bpfish
& name: [couplet ads] JS script class
& Function: Display the couplet advertisement of the page
& Method:
& Smileadver.setleftpos (10); Set the position of the left couplet to the left of the page (PX)
& Smileadver.setlefttop (150); Set the position of the left antithetical couplet at the top of the page (PX)
& Smileadver.setrightpos (10); Set the position of the right couplet to the right of the page (PX)
& Smileadver.setrighttop (150); Set the position of the right antithetical couplet from the top of the page (PX)
& Smileadver.addleftimage (link, picture address, link target, picture hint); Add a picture of the left couplet ad
& Smileadver.addrightimage (link, picture address, link target, picture hint); Add a picture of the right couplet advertisement
& Smileadver.scroll (); Show couplet ads
&
//****************************************************************************************
function Smileadver_class () {
var leftimagearray = new Array (); Save an array of ad images to the left
var rightimagearray = new Array (); Save an array of advertising pictures to the right
var Leftpos,rightpos; LeftPos = left side of the advertisement from the left column position (px) Rightpos = Right side of the advertisement from the right column position (px)
var lefttop,righttop; Lefttop = left side of the advertisement from the top sidebar position (px) Righttop = the right side of the advertisement from the top sidebar position (px)
var lastscrolly=0;
LeftPos = Rightpos = 10; Default is 10
Lefttop = Righttop = 150; Default is 150
This.setleftpos = function (value) {
if (isNaN (value)) {value = 10;} Non-digit defaults to 10
LeftPos = value;
}
This.setrightpos = function (value) {
if (isNaN (value)) {value = 10;} Non-digit defaults to 10
Rightpos = value;
}
This.setlefttop = function (value) {
if (isNaN (value)) {value = 150;} Non-digit defaults to 150
Lefttop = value;
}
This.setrighttop = function (value) {
if (isNaN (value)) {value = 150;} Non-digit defaults to 150
Righttop = value;
}
Add to the left of the picture ad addleftimage (link, picture address, link target, picture hint)
This.addleftimage = function (href,image,target,title) {
var Imagearray = Getimagearray (Href,image,target,title);
if (Imagearray!= null) {
Leftimagearray[leftimagearray.length] = Imagearray;
}
}
Add the right picture ad addrightimage (link, picture address, link target, picture hint)
This.addrightimage = function (href,image,target,title) {
var Imagearray = Getimagearray (Href,image,target,title);
if (Imagearray!= null) {
Rightimagearray[rightimagearray.length] = Imagearray;
}
}
Internal add advertising picture use, if there is no picture address, then return a null value, otherwise return an array
function Getimagearray (href,image,target,title) {
if (image = = undefined) {return null;} No picture address, no add
if (target = = Undefined | | target = = "") {target = "_blank"}; Default to _blank open mode
target = "target=\" "+ target +" \ ";
if (title = = undefined) {//advertising picture title hint
title = "";
}else{
title = "Title=\" "+ title +" "";
}
Link to www. Automatically add http://(otherwise link will link error)
if (Href.tolowercase (). substring (0,4) = = "www.") {
href = "http://"; + href;
}
if (Image.tolowercase (). substring (0,4) = = "www.") {
Image = "http://"; + image;
}
return new Array (Href,image,target,title);
}
Internal display picture banner used Showimagediv (div name, div placement direction (left,right), div placement, div layer from the top position, display picture array variable)
function Showimagediv (Div,pos,pospx,toppx,imagearray) {
var J;
document.write ("<div id=\" "+ div +" \ "style=\" "+ pos +": "+ pospx +" PX; Position:absolute; Top: "+ toppx +" px;\ ">");
for (j=0; j< Imagearray.length; j + +) {
document.write ("<a href=\" "+ imagearray[j][0] +" "" + imagearray[j][2]+ Imagearray[j][3] + "></a>");
if (J!= imagearray.length-1) {document.write ("<table border=\" 0\ "cellpadding=\" 0\ "cellspacing=\" 0\ "><tr") &GT;&LT;TD height=10></td></tr></table> ");}
}
document.write ("</div>");
}
Scrolling ads Couplet Pictures
This.scroll = function () {
Showimagediv ("Smilediv1", "left", Leftpos,lefttop,leftimagearray);
Showimagediv ("Smilediv2", "right", rightpos,righttop,rightimagearray);
Window.setinterval (scrollimage,1);
}
Internal use to scroll advertising pictures
function Scrollimage () {
var diffy,percent;
Diffy=document.body.scrolltop;
Percent=.1* (diffy-lastscrolly);
if (percent>0) Percent=math.ceil (percent);
else Percent=math.floor (percent);
Document.all.smilediv1.style.pixeltop+=percent;
Document.all.smilediv2.style.pixeltop+=percent;
Lastscrolly=lastscrolly+percent;
}
}
Class End////////////////////////////////////////////////////////////////
Use sample code for class////////////////////////////////////////////////
var smileadver = new Smileadver_class ();
Smileadver.setleftpos (10);
Smileadver.setrightpos (10);
Smileadver.setlefttop (150);
Smileadver.setrighttop (150);
Smileadver.addleftimage ("http://www.138tips.com/", "http://www.88ball.com/images/138tips.gif";, "", "asdfasdf");
Smileadver.addleftimage ("http://www.138tips.com/", "http://www.88ball.com/images/138tips.gif");
Smileadver.addleftimage ("http://www.138tips.com/", "http://www.88ball.com/images/138tips.gif");
Smileadver.addrightimage ("http://www.138tips.com/", "http://www.88ball.com/images/138tips.gif");
Smileadver.addrightimage ("http://www.138tips.com/", "http://www.88ball.com/images/138tips.gif");
Smileadver.addrightimage ("http://www.138tips.com/", "http://www.88ball.com/images/138tips.gif");
Smileadver.scroll ();