三秒后变回默认值
<TABLE id=tbl cellSpacing=1 cellPadding=1 border=1>
<TBODY>
<TR>
<TD width=100 onmouseover="a(this)" onmouseout="b()">This is Line1</TD></TR>
<TR>
<TD width=100 onmouseover="a(this)" onmouseout="b()">This is Line2</TD></TR>
<TR>
<TD width=100 onmouseover="a(this)" onmouseout="b()">This is Line3</TD></TR>
</TBODY>
</TABLE>
<div style="border:1px solid red;width:200px;height:50px" id="MenuBar">default innerText</div>
<script language="JavaScript">
var tmp = MenuBar.innerText;var second=0;
var minute=0;
var hour=0;
idt=window.setTimeout("interval();",1000);
function interval(){
second++;
if(second==60){second=0;minute+=1;}
if(minute==60){minute=0;hour+=1;}
showtip=3-second
if (showtip==0)
{
MenuBar.innerText = tmp;
}idt=window.setTimeout("interval();",1000);}
function a(obj) {
MenuBar.innerText = obj.innerText;
}function b() {
idt=window.setTimeout("interval();",1000);}
</script>
<TABLE id=tbl cellSpacing=1 cellPadding=1 border=1>
<TBODY>
<TR>
<TD width=100 onmouseover="a(this)" onmouseout="b()">This is Line1</TD></TR>
<TR>
<TD width=100 onmouseover="a(this)" onmouseout="b()">This is Line2</TD></TR>
<TR>
<TD width=100 onmouseover="a(this)" onmouseout="b()">This is Line3</TD></TR>
</TBODY>
</TABLE>
<div style="border:1px solid red;width:200px;height:50px" id="MenuBar">default innerText</div>
<script language="JavaScript">
var tmp = MenuBar.innerText;var second=0;
var minute=0;
var hour=0;
idt=window.setTimeout("interval();",1000);
function interval(){
second++;
if(second==60){second=0;minute+=1;}
if(minute==60){minute=0;hour+=1;}
showtip=3-second
if (showtip==0)
{
MenuBar.innerText = tmp;
}idt=window.setTimeout("interval();",1000);}
function a(obj) {
MenuBar.innerText = obj.innerText;
}function b() {
idt=window.setTimeout("interval();",1000);}
</script>
<TBODY>
<TR>
<TD width=100 onmouseover="a(this)" onmouseout="b()">This is Line1</TD></TR>
<TR>
<TD width=100 onmouseover="a(this)" onmouseout="b()">This is Line2</TD></TR>
<TR>
<TD width=100 onmouseover="a(this)" onmouseout="b()">This is Line3</TD></TR>
</TBODY>
</TABLE>
<div style="border:1px solid red;width:200px;height:50px" id="MenuBar">default innerText</div>
<script language="JavaScript">
var tmp = MenuBar.innerText;
var second=0;
var minute=0;
var hour=0;
var st=6;
idt=window.setTimeout("interval();",1000);
function interval(){
second++;
if(second==60){second=0;minute+=1;}
if(minute==60){minute=0;hour+=1;}
showtip=st-second;
if (showtip<0)
{
MenuBar.innerText = tmp;
showtip=0;
}
else{
MenuBar.innerText = showtip;
idt=window.setTimeout("interval();",1000);}}
function a(obj) {
second=0;
minute=0;
hour=0;
MenuBar.innerText = obj.innerText;
}function b() {
idt=window.setTimeout("interval();",1000);}
</script>
<TBODY>
<TR>
<TD width=100 onmouseover="a(this)" onmouseout="b()">This is Line1</TD></TR>
<TR>
<TD width=100 onmouseover="a(this)" onmouseout="b()">This is Line2</TD></TR>
<TR>
<TD width=100 onmouseover="a(this)" onmouseout="b()">This is Line3</TD></TR>
</TBODY>
</TABLE>
<div style="border:1px solid red;width:200px;height:50px" id="MenuBar">default innerText</div>
<script language="JavaScript">
var tmp = MenuBar.innerText;
function a(obj) {
if (MenuBar.timer!=undefined) window.clearInterval(MenuBar.timer);
MenuBar.innerText = obj.innerText;
}function b() {
//过一秒
MenuBar.timer=window.setInterval("MenuBar.innerText = tmp",1000);
}
</script>