日期:2014-05-16  浏览次数:20361 次

关于层在窗体中的移动
<!DOCTYPE   html   PUBLIC   "-//W3C//DTD   XHTML   1.0   Transitional//EN "   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<html   xmlns= "http://www.w3.org/1999/xhtml ">
<head>
<meta   http-equiv= "Content-Type "   content= "text/html;   charset=gb2312 "   />
<title> 无标题文档 </title>
<script   language= "javascript ">
function   move(){
var   now_left   =   document.getElementById( "movelayer ").style.left;
var   window_width   =   document.body.offsetWidth;
var   now_top   =   document.getElementById( "movelayer ").style.top;
var   window_height   =   window.screen.height;
if   ((parseInt(now_left)   +   80)   <   window_width){
top_left_move();
setTimeout   ( "move() "   ,1);
}
else   if   ((parseInt(now_top)   +   80)   <   window_height){
right_down_move();
setTimeout   ( "move() "   ,1);
}
else   {
var   stop   =   setTimeout   ( "move() "   ,1);
clearTimeout   (stop);
move_down_up();
}
}
function   top_left_move(){
var   now_left   =   document.getElementById( "movelayer ").style.left;
var   window_width   =   document.body.offsetWidth;
if   ((parseInt(now_left)   +   80)   <   window_width){
document.getElementById( "movelayer ").style.left   =   parseInt(now_left)   +   1;
var   stop   =   setTimeout( "top_left_move() ",   100);
}
else   {
clearTimeout   (stop);
return   ;
}
}
function   right_down_move(){
var   now_top   =   document.getElementById( "movelayer ").style.top;
var   window_height   =   window.screen.height;
if   ((parseInt(now_top)   +   80)   <   window_height){
document.getElementById( "movelayer ").style.top   =   parseInt(now_top)   +   1   ;
var   stop   =   setTimeout( "right_down_move() ",   100);
}
else   {
clearTimeout   (stop);
return   ;
}
}


function   move_down_up(){
var   now_left   =   document.getElementById( "movelayer ").style.left;
var   now_top   =   document.getElementById( "movelayer ").style.top;
if   (parseInt(now_left)   >   0   ){
down_left_move();
setTimeout   ( "move_down_up() "   ,1);
}
else   if   (parseInt(now_top)   >   0   ){
left_up_move();
setTimeout   ( "move_down_up() "   ,1);
}
else   {
var   stop   =   setTimeout   ( "move_down_up() "   ,1);
clearTimeout   (stop);
move();
}
}
function   down_left_move(){
var   now_left   =   document.getElementById( "movelayer ").style.left;
if   (parseInt(now_left)   >   0   ){
document.getElementById( "movelayer ").style.left   =   parseInt(now_left)   -   1;
var   stop   =   setTimeout( "down_left_move() ",