//**************************************************************************************** //& 作者: 哇哇鱼 //& 日期: 2004年12月31日 //& 网站: http://www.13smile.com/ //& Blog: http://blog.csdn.net/bpfish //& 名称: [对联广告] JS脚本类 //& 作用: 显示页面的对联广告 //& 方法: //& SmileAdver.setLeftPos(10); //设置左边对联的距页面左边的位置(PX) //& SmileAdver.setLeftTop(150); //设置左边对联的距页面顶部的位置(PX) //& SmileAdver.setRightPos(10); //设置右边对联的距页面右边的位置(PX) //& SmileAdver.setRightTop(150); //设置右边对联的距页面顶部的位置(PX) //& SmileAdver.addLeftImage(链接,图片地址,链接目标,图片提示); //添加左边对联广告的图片 //& SmileAdver.addRightImage(链接,图片地址,链接目标,图片提示); //添加右边对联广告的图片 //& SmileAdver.scroll(); //显示对联广告 //& //**************************************************************************************** function SmileAdver_Class(){ var leftImageArray = new Array(); //保存左边的广告图片数组 var rightImageArray = new Array(); //保存右边的广告图片数组 var leftPos,rightPos; //leftPos = 左边广告的距左边栏位置(px) rightPos = 右边广告的距右边栏位置(px) var leftTop,rightTop; //leftTop = 左边广告的距顶边栏位置(px) rightTop = 右边广告的距顶边栏位置(px) var lastScrollY=0; leftPos = rightPos = 10; //默认为10 leftTop = rightTop = 150; //默认为150 this.setLeftPos = function(value){ if(isNaN(value)){value = 10;} //非数字则默认为10 leftPos = value; } this.setRightPos = function(value){ if(isNaN(value)){value = 10;} //非数字则默认为10 rightPos = value; } this.setLeftTop = function(value){ if(isNaN(value)){value = 150;} //非数字则默认为150 leftTop = value; } this.setRightTop = function(value){ if(isNaN(value)){value = 150;} //非数字则默认为150 rightTop = value; } //添加左边的图片广告 addLeftImage(链接,图片地址,链接目标,图片提示) this.addLeftImage = function(href,image,target,title){ var imageArray = getImageArray(href,image,target,title); if(imageArray != null){ leftImageArray[leftImageArray.length] = imageArray; } } //添加右边的图片广告 addRightImage(链接,图片地址,链接目标,图片提示) this.addRightImage = function(href,image,target,title){ var imageArray = getImageArray(href,image,target,title); if(imageArray != null){ rightImageArray[rightImageArray.length] = imageArray; } } //内部添加广告图片使用,如果没有图片地址,则返回一个null值,否则返回一个数组 function getImageArray(href,image,target,title){ if(image == undefined){return null;} //没有图片地址,不添加 if(target == undefined || target == ""){target = "_blank"}; //默认为_blank打开方式 target = " target="" + target + """; if(title == undefined){ //广告图片title提示 title = "" ; }else{ title = " title="" + title + """; } //链接以www.开头则自动加上http:// (否则链接时会链接错误) 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); } //内部显示图片横幅所用 showImageDiv(div的名称,div的摆放方向(left,right),div的摆放位置,div层距顶部的位置,显示的图片数组变量) 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] + "><img src=""+ imageArray[j][1] + "" border="0" "+ imageArray[j][3] + "></a>"); if(j != imageArray.length-1){document.write("<table border="0" cellpadding="0" cellspacing="0"><tr><td height=10></td></tr></table>");} } document.write("</div>"); } //滚动广告对联图片 this.scroll = function(){ showImageDiv("smilediv1","left",leftPos,leftTop,leftImageArray); showImageDiv("smilediv2","right",rightPos,rightTop,rightImageArray); window.setInterval(scrollImage,1); } //内部使用用来滚动广告图片 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; } } ///////////////////////////////////////////类结束//////////////////////////////////////////////////////////////// /////////类的使用示例代码//////////////////////////////////////////////// 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();
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