获取鼠标的位置

//普通js函数
function test(event) {
 event = event || window.event;
 var x = event.offsetX || event.layerX;
 var y = event.offsetY || event.layerY;
 alert("x="+x+"; y="+y);
  }

//jquery函数
$(function(){
 $("#t").mouseover(
  function(event){
   event = event || window.event;
   var x = event.offsetX || event.originalEvent.layerX;
   var y = event.offsetY || event.originalEvent.layerY;
   alert("x:"+x+"; y:"+y);
  }
 );
 });