【www.gdgbn.com--手机软件】

function fromid(id) {
return document.getelementbyid(id);
}

function show_alert(msg, type, time) {
var layer_obj = fromid("alert_layer");
var layer_text= fromid("alert_text");
var line_height = (document.documentelement.scrolltop == 0) ? document.body.scrolltop : document.documentelement.scrolltop;

layer_text.innerhtml = msg;
with(layer_obj.style) {
zindex = 999;
top = line_height-40;
left = document.body.clientwidth/3;
display = "block";
position = "absolute";
if(type == "error") {
background = "url(http://"+style_domain+"/snake/index/msgbox_right_bg2.jpg)";
}
}

layer_obj.filters[0].opacity = "0.8"; //透明度为 80%

if(time == undefined) time = 3000;
else time = time*1000;

var top = line_height-40;
var speed = 1.5;
time-= 1000;
//控制窗口向下移动至页面边缘
move_down = function movefplogo() {
top+= speed;
layer_obj.style.top = top;
if(top < line_height) settimeout("move_down()", 1);
else settimeout("close_alert_win()", time);
}

move_down();
}

function close_alert_win() {
var layer_obj = fromid("alert_layer");
//控制窗口渐渐消失
if(layer_obj.filters[0].opacity < 0.02) {
layer_obj.style.display = "none";
return true;
}
layer_obj.filters[0].opacity-= 0.02;
settimeout("close_alert_win()", 1);
}
document.writeln(" filter:progid:dximagetransform.microsoft.basicimage();">");
document.writeln(" ");
document.writeln(" ");
document.writeln("");

再看一款实例

<script type="text/网页特效">
function s(i) { return document.getelementbyid(i); }
function download( evt, fid){
 var _event = evt ? evt : event;
 var _target = evt ? evt.target : event.srcelement;
 var _p = s( "downloadpanel" );
 _p.style.top = _event.clienty + document.body.scrolltop ;
 _p.style.left = ( _event.clientx + document.body.scrollleft < 160 ? _event.clientx + document.body.scrollleft + 10  : _event.clientx  + document.body.scrollleft - 120 );
 show( "downloadpanel" , true );
 _p.focus();
}//欢迎来到站长特效网，我们的网址是www.111cn.net，很好记，zz站长，js就是js特效，本站收集大量高质量js代码，还有许多广告代码下载。
function show(obj, bshow) {
 obj = (typeof(obj) == "string" ? s(obj) : obj);
 if (obj) obj.style.display= (bshow ? "" : "none");
}
function hidedownloadpanel( evt ){
 show( "downloadpanel" ,false);
}
function checkclick(evt){
 var _target = evt ? evt.target : event.srcelement ;
 var _id = _target.id;
 if( _id == "" ){
  _id = _target.parentnode.id;
 }
 if( _id !="downloaddirect" && _id != "downloadagent" && _id != "downloadpanel" && _id.indexof( "downloadfile_" ) < 0 && _id.indexof( "downloadlink_" ) < 0 ){
  show( "downloadpanel" , false );
 }
}//欢迎来到站长特效网，我们的网址是www.111cn.net，很好记，zz站长，js就是js特效，本站收集大量高质量js代码，还有许多广告代码下载。
window.onload = function(){
 document.body.onclick=checkclick;
}
</script>



">站长特效网,站长必备的高质量网页特效和广告代码。zzjs.net，站长js特效。

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本文来源：http://www.gdgbn.com/shoujikaifa/27674/