CSS代码：

#containerDiv

{

}

{

width:100%;

height:100%;

background-color:#E6E6E6;

filter : progid:DXImageTransform.Microsoft.Alpha(startX=0, startY=0, finishX=100, finishY=100,style=1,opacity=25,finishOpacity=25);

position:absolute;

top:0;

left:0;

z-index:49;

display:none;

}

#floatDiv

{

}

{

top:200px;

position:absolute;

z-index:50;

width:100px;

display:none;

border:3px solid #E5E5E5; 

left:100px;

background-color:#e6e6e6;

}

Javascript代码：

 1 

function

 show(){

 2 

 3 

var

 container

=

document.getElementById(

"

containerDiv

"

)

 4 

var

 floatDiv

=

document.getElementById(

"

floatDiv

"

);

 5 

container.style.height

=

650

+

"

px

"

;

 6 

container.style.width

=

window.screen.width

+

"

px

"

;

 7 

container.style.display

=

'block';

 8 

floatDiv.style.display

=

'block';

 9 

}

10 

function

 hide(){

11 

12 

var

 container

=

document.getElementById(

"

containerDiv

"

)

13 

var

 floatDiv

=

document.getElementById(

"

floatDiv

"

);

14 

container.style.display

=

'none';

15 

floatDiv.style.display

=

'none';

16 

}

HTML标签：

<

div 

id

="floatDiv"

>

在这个DIV里可以放一些元素

<

br

/><

input 

name

="Button1"

 type

="button"

 value

="button"

 onclick

="hide()"

/>

</

div

>

<

div 

id

="containerDiv"

>

 

</

div

>

    

<

form 

method

="post"

>

    

<

input 

name

="Button2"

 type

="button"

 value

="button"

 onclick

="show()"

/>

</

form

>