把网页中图片的Alt提示去掉的实现方法

王朝html/css/js·作者佚名  2008-05-31
窄屏简体版  字體: |||超大  

<!-- http://www.knowsky.com -->

<!-- bbs http://bbs.knowsky.com -->

<!--完整的HTML文件如下:-->

<HTML><HEAD></HEAD>

<BODY onload=dotransition()>

<SCRIPT language=JavaScript1.1>

messages = new Array()

messages[0] = "欢迎来到网页教学网"

messages[1] = "这是一个专业的网页教学资源站点"

messages[2] = "我们的地址 www.knowsky.com"

mescolor = new Array()

mescolor[0] = "000000"

mescolor[1] = "FF0000"

mescolor[2] = "226622"

mescolor[3] = "0000FF"

mescolor[4] = "FFFF00"

textfont = new Array()

textfont[0] = "宋体"

textfont[1] = "Times"

textfont[2] = "Arial"

bagcolor = new Array()

bagcolor[0] = "CCCCCC"

bagcolor[1] = "Yellow"

bagcolor[2] = "CCFFFF"

bagcolor[3] = "AAEEFF"

bagcolor[4] = "CCFF88"

bagcolor[5] = "orange"

bagcolor[6] = "99AAFF"

var i_messages = 0

var timer

function randomposition(range) {

return Math.floor(range*Math.random())

}

function dotransition() {

if (document.all) {

content.filters[i_messages].apply()

content.innerHTML = "<table width=320 height=180 border=2><tr><td bgcolor="+bagcolor[randomposition(6)]+" style='color:"+mescolor[randomposition(4)]+";font-family:"+textfont[randomposition(2)]+";font-size:30px' align=center valign=middle>"+messages[i_messages]+"</td></tr></table>"

content.filters[i_messages].play()

if (i_messages >= messages.length-1) {

i_messages = 0

}

else {

i_messages++

}

}

timer = setTimeout("dotransition()",3000)

}

</SCRIPT>

<DIV id=content style="FILTER: revealTrans(Transition=1, Duration=3) revealTrans(Transition=2, Duration=3) revealTrans(Transition=3, Duration=2) revealTrans(Transition=4, Duration=2) revealTrans(Transition=5, Duration=1) revealTrans(Transition=6, Duration=3) revealTrans(Transition=7, Duration=2) revealTrans(Transition=8, Duration=1) revealTrans(Transition=9, Duration=3) revealTrans(Transition=10, Duration=1) revealTrans(Transition=11, Duration=2) revealTrans(Transition=12, Duration=3) revealTrans(Transition=13, Duration=1) revealTrans(Transition=14, Duration=2) revealTrans(Transition=15, Duration=3) revealTrans(Transition=16 Duration=1) revealTrans(Transition=17, Duration=2) revealTrans(Transition=18, Duration=3) revealTrans(Transition=19, Duration=1) revealTrans(Transition=20, Duration=2) revealTrans(Transition=21, Duration=3) revealTrans(Transition=22, Duration=3); LEFT: 20px; WIDTH: 560px; POSITION: absolute; TOP: 120px; HEIGHT: 200px; TEXT-ALIGN: center"></DIV>

<DIV id=source style="LEFT: 20px; WIDTH: 560px; COLOR: #aaaaaa; POSITION: absolute; TOP: 240px; TEXT-ALIGN: center"></DIV>

<DIV id=nn style="LEFT: 20px; POSITION: absolute; TOP: 20px"></DIV>

</BODY></HTML>

 
 
 
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