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滚动条 中的 内容淡入切换效果
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将代码放入body中便可
<script type="text/javascript">
var delay = 2000; //set delay between message change (in miliseconds)
var maxsteps=30; // number of steps to take to change from start color to endcolor
var stepdelay=40; // time in miliseconds of a single step
//**Note: maxsteps*stepdelay will be total time in miliseconds of fading effect
var startcolor= new Array(255,255,255); // start color (red, green, blue)
var endcolor=new Array(0,0,0); // end color (red, green, blue)
var fcontent=new Array();
begintag='<div style="font: normal 14px Arial; padding: 5px;">'; //set opening tag, such as font declarations
fcontent[0]="<b>What\'s new?</b><br>New scripts added to the Scroller category!<br><br>The MoreZone has been updated. <a href='../morezone/index.htm'>Click here to visit</a>";
fcontent[1]="Dynamic Drive has been featured on Jars as a top 5% resource, and About.com as a recommended DHTML destination.";
fcontent[2]="Ok, enough with these pointless messages. You get the idea behind this script.</a>";
closetag='</div>';
var fwidth='150px'; //set scroller width
var fheight='150px'; //set scroller height
var fadelinks=1; //should links inside scroller content also fade like text? 0 for no, 1 for yes.
///No need to edit below this line/////////////////
var ie4=document.all&&!document.getElementById;
var DOM2=document.getElementById;
var faderdelay=0;
var index=0;
/*Rafael Raposo edited function*/
//function to change content
function changecontent(){ if (index>=fcontent.length) index=0 if (DOM2){ document.getElementById("fscroller").style.color="rgb("+startcolor[0]+", "+startcolor[1]+", "+startcolor[2]+")" document.getElementById("fscroller").innerHTML=begintag+fcontent[index]+closetag if (fadelinks) linkcolorchange(1); colorfade(1, 15); } else if (ie4) document.all.fscroller.innerHTML=begintag+fcontent[index]+closetag; index++
}
// colorfade() partially by Marcio Galli for Netscape Communications. ////////////
// Modified by Dynamicdrive.com
function linkcolorchange(step){ var obj=document.getElementById("fscroller").getElementsByTagName("A"); if (obj.length>0){ for (i=0;i<obj.length;i++) obj[i].style.color=getstepcolor(step); }
}
/*Rafael Raposo edited function*/
var fadecounter;
function colorfade(step) { if(step<=maxsteps) { document.getElementById("fscroller").style.color=getstepcolor(step); if (fadelinks) linkcolorchange(step); step++; fadecounter=setTimeout("colorfade("+step+")",stepdelay); }else{ clearTimeout(fadecounter); document.getElementById("fscroller").style.color="rgb("+endcolor[0]+", "+endcolor[1]+", "+endcolor[2]+")"; setTimeout("changecontent()", delay); }
}
/*Rafael Raposo's new function*/
function getstepcolor(step) { var diff var newcolor=new Array(3); for(var i=0;i<3;i++) { diff = (startcolor[i]-endcolor[i]); if(diff > 0) { newcolor[i] = startcolor[i]-(Math.round((diff/maxsteps))*step); } else { newcolor[i] = startcolor[i]+(Math.round((Math.abs(diff)/maxsteps))*step); } } return ("rgb(" + newcolor[0] + ", " + newcolor[1] + ", " + newcolor[2] + ")");
}
if (ie4||DOM2) document.write('<div id="fscroller" style="border:1px solid black;width:'+fwidth+';height:'+fheight+'"></div>');
if (window.addEventListener)
window.addEventListener("load", changecontent, false)
else if (window.attachEvent)
window.attachEvent("onload", changecontent)
else if (document.getElementById)
window.onload=changecontent
</script>
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