<script>   
function collectElems(){   
   var b=document.all||document.getElementsByTagName('*');   
   for(var i=0;i<b.length;i++){   
   addEvt(b[i],'mousedown',function(a){   
   if(mousePosition(a).t.className.match(/dragable/ig)){   
   dragElems(mousePosition(a).t,a)   
   }   
   })   
   }   
   }   
collectElems();   
function dragElems(b,c){   
   mousePosition(c,'p');   
   var i,x,y,l,t;   
   i=true;   
   x=mousePosition(c).x;   
   y=mousePosition(c).y;   
   l=b.offsetLeft;   
   t=b.offsetTop;   
   addEvt(b,'mouseup',function(){i=false});   
   addEvt(document,'mouseup',function(){i=false});   
   addEvt(document,'mousemove',function(a){   
   if(i){   
   mousePosition(a,'p');   
   b.style.left=l+mousePosition(a).x-x+'px';   
   b.style.top=t+mousePosition(a).y-y+'px'   
   }   
   })   
   }   
function mousePosition(event,i){   
   var d,x,y,t,b;   
   d=document;   
   b=/*@cc_on!@*/false;   
   e=b?window.event:event;   
   if(i){b?e.returnValue=false:e.preventDefault()}   
   x=(b?d.documentElement.scrollTop:d.body.scrollTop)+e.clientX;   
   y=(b?d.documentElement.scrollLeft:d.body.scrollLeft)+e.clientY;   
   t=b?e.srcElement:e.target;   
   return{x:x,y:y,t:t}   
   }   
function addEvt(a,b,i){   
   if(a.addEventListener){a.addEventListener(b,i,false)}else   
   if(a.attachEvent){a.attachEvent('on'+b,i)}else   
   {a['on'+b]=i}   
}   
</script>

<div style="position:absolute;" class="dragable"><a href="http://virtus-war.net.ru">Перенеси меня</a></div>