动态说明导航框（从左右飞入）-优快云博客

此博客展示了一段JavaScript代码，用于实现新闻站点滚动消息效果。代码中定义了多个新闻站点的消息、链接和目标窗口，设置了文本框的宽高、位置等参数，通过一系列函数控制消息的显示和滚动切换，实现动态展示不同站点消息的功能。

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<body>

// The links of your messages. Be sure that you configure as many links as messages.
// If don't want to link your messages write '#' instead of an URL (see last sample).
var messageurl=new Array()
messageurl[0]="http://www.sina.com.cn/"
messageurl[1]="http://www.163.com/"
messageurl[2]="http://www.sohu.com/"
messageurl[3]="http://www.the9.com/"

var messagetarget=new Array()
messagetarget[0]="_blank"
messagetarget[1]="_blank"
messagetarget[2]="_blank"
messagetarget[3]="_blank"
// The width of your textbox (pixels).
// Be sure that 'textwidth' is slightly bigger than the 'width' configured inside the stylesheet
var textwidth=260

// The height of your textbox (pixels)
// Be sure that 'textheight' is slightly bigger than the 'height' configured inside the stylesheet
var textheight=75

// Final horizontal position of the textbox: distance to the left margin of the window (pixels)
// IMPORTANT:
// if you want to center the textbox in the middle of the browser-window then write -1.
// If you want to place the textbox on an absolute position
// then write the number (for instance 223).
var x_finalpos=-1

// Final vertical position of the textbox: distance to the top margin of the window
var y_finalpos=20

// Total number of textslices
var textslices=10

// Standstill of textbox (seconds)
var pausetext=5

// Speed of horizontal gliding
var step=10
var pause=40

// Do not edit the variables below this line
var x_rightspans=0
var x_leftspans=0
var marginright
var marginleft
var height_slice=Math.floor(textheight/textslices)
var cliptop=0
var clipbottom=cliptop+height_slice
var clipleft=0
var clipright=textwidth
var spannummer=0
var spannrbefore=0
var i_message=0
pausetext=pausetext*1000

function initiate() {
if (document.all) {
if (x_finalpos==-1) {
x_finalpos=Math.floor(document.body.clientWidth/2)-Math.floor(textwidth/2)
}
changemessage()
}
}

function changemessage() {
for (i=0;i<=textslices-1;i++) {
var thisspan=eval("span"+i)
thisspan.innerHTML="<a href='"+messageurl[i_message]+"' target='blank'>"+message[i_message]+"</a>"
}
gostartposition()
}

// - End of JavaScript - -->
</script>
<style>
A {
color : red;
text-decoration : none
}
A:hover {
color : white;
text-decoration : none
}
.textbox {
font-size : 18;
font-family : Verdana;
font-style : normal;
color : red;
border-width : 4;
text-align : center;
background-color : blue;
border-style : solid;
padding : 5;
height : 65;
width : 250;
overflow : clip;
font-weight : bold;
}
</style>
<script>
<!-- Beginning of JavaScript -
// Do not edit this script-block
if (document.all) {
for (i=0;i<=textslices-1;i+=2) {
marginright=document.body.clientWidth+50
document.write("<span class='textbox' id='span"+i+"' style='position:absolute;visibility:visible; left:"+marginright+"px;top:"+y_finalpos+"px;clip:rect("+cliptop+"px "+clipright+"px "+clipbottom+"px "+clipleft+"px)'>")
document.write("</span>")
cliptop+=2*height_slice
clipbottom+=2*height_slice
}
cliptop=height_slice
clipbottom=2*height_slice
for (i=1;i<=textslices-1;i+=2) {
marginleft=-textwidth-50
document.write("<span class='textbox' id='span"+i+"' style='position:absolute;visibility:visible; left:"+marginleft+"px;top:"+y_finalpos+"px;clip:rect("+cliptop+"px "+clipright+"px "+clipbottom+"px "+clipleft+"px)'>")
document.write("</span>")
cliptop+=2*height_slice
clipbottom+=2*height_slice
}
}
initiate()
</script>
<div style="position: absolute; top: -25; left: 9; width: 717; height: 19">
</div>
</body>