ad02.js

来自「各种数据整合,使用与各种数据库的整合」· JavaScript 代码 · 共 56 行

   var delta=0.015
   var collection;
   function floaters() {
       this.items    = [];
       this.addItem    = function(id,x,y,content)
                 {
                   document.write('<DIV id='+id+' style="Z-INDEX: 0; POSITION: absolute;  width:80px; height:60px;left:'+(typeof(x)=='string'?eval(x):x)+';top:'+(typeof(y)=='string'?eval(y):y)+'">'+content+'</DIV>');
                  
                   var newItem                = {}; 
                   newItem.object            = document.getElementById(id);
                   newItem.x                = x;
                   newItem.y                = y;

                   this.items[this.items.length]        = newItem;
                 }
       this.play    = function()
                 {
                   collection                = this.items
                   setInterval('play()',10); 
                 }
       }
       function play()
       {
           if(screen.width<=800)
           {
               for(var i=0;i<collection.length;i++)
               {
                   collection[i].object.style.display    = 'none';
               }
               return;
           }
           for(var i=0;i<collection.length;i++)
           {
               var followObj        = collection[i].object;
               var followObj_x        = (typeof(collection[i].x)=='string'?eval(collection[i].x):collection[i].x); 
               var followObj_y        = (typeof(collection[i].y)=='string'?eval(collection[i].y):collection[i].y);

               if(followObj.offsetLeft!=(document.body.scrollLeft+followObj_x)) {
                   var dx=(document.body.scrollLeft+followObj_x-followObj.offsetLeft)*delta;
                   dx=(dx>0?1:-1)*Math.ceil(Math.abs(dx));
                   followObj.style.left=followObj.offsetLeft+dx;
                   }

               if(followObj.offsetTop!=(document.body.scrollTop+followObj_y)) {
                   var dy=(document.body.scrollTop+followObj_y-followObj.offsetTop)*delta; 
                   dy=(dy>0?1:-1)*Math.ceil(Math.abs(dy));
                   followObj.style.top=followObj.offsetTop+dy;
                   }
               followObj.style.display    = '';
           }
       }   
      
   var theFloaters        = new floaters();
   theFloaters.addItem('followDiv1','document.body.clientWidth-100',0,'</a><br><a href=money.asp><img src=ad/images/1.jpg width=104 height=166 border=0></a>');
   theFloaters.addItem('followDiv2',0,0,'<br><a href=money.asp><img src=ad/images/1.jpg width=104 height=166 border=0></a>');
   theFloaters.play();