for IE/FF-----
<input type=button value=test2 onmousedown="foo(event,this);">
<SCRIPT srccccc="css/layout.js" type=text/javascript>//新层的定义
document.getElementById("aaa").onmousedown = function(event){foo(event||window.event,this)};function foo(e,obj)
{
alert(e);
alert(obj.value)}
</SCRIPT>
<input type=button value=test2 onmousedown="foo(event,this);">
<SCRIPT srccccc="css/layout.js" type=text/javascript>//新层的定义
document.getElementById("aaa").onmousedown = function(event){foo(event||window.event,this)};function foo(e,obj)
{
alert(e);
alert(obj.value)}
</SCRIPT>
<input type=button value=test2 onmousedown="foo(event,this);">
<SCRIPT srccccc="css/layout.js" type=text/javascript>//新层的定义
document.getElementById("aaa").onmousedown = function(event){foo(event||window.event,this)};function foo(e,obj)
{
alert(e);
alert(obj.value)}
</SCRIPT>