用Javascript 编写可以缓慢弹出收缩的层

　　代码如下：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<title>层的扩展与收缩</title> 
</head> 
<body> 
<div id="div1"> 
</div> 
<img src="/_New/_cj/myeditor/sysimage/space.gif" class="ewebeditor__script" _ewebeditor_fake_tag="script" _ewebeditor_fake_value="%3Cscript%20type%3D%22text%2Fjavascript%22%3E%20%0D%0Afunction%20StretchDiv(divid%2Ccolor)%7B%20%0D%0Avar%20target%3B%20%0D%0Avar%20flag%3Dfalse%3B%20%0D%0Avar%20onMouseDown%3Dfunction()%7B%20%0D%0Aif(flag)%7B%20%0D%0Avar%20h%3DparseInt(target.style.height)%3B%20%0D%0AonMouseDown.shortDiv%3Dfunction()%7B%20%0D%0Ah%3Dh-1%3B%20%0D%0Aif(h%3C20)%7B%20%0D%0Areturn%3B%20%0D%0A%7D%20%0D%0Atarget.style.height%3Dh%2B%22px%22%3B%20%0D%0AsetTimeout(onMouseDown.shortDiv%2C30)%3B%20%0D%0A%7D%20%0D%0AonMouseDown.shortDiv()%3B%20%0D%0A%7D%20%0D%0Aelse%20%7B%20%0D%0A%2F%2Ftarget.style.height%3DparseInt(target.style.height)%2B180%2B%22px%22%3B%20%0D%0Avar%20h%3DparseInt(target.style.height)%3B%20%0D%0AonMouseDown.longDiv%3Dfunction()%7B%20%0D%0Ah%3Dh%2B1%3B%20%0D%0Aif(h%3E200)%7B%20%0D%0Areturn%3B%20%0D%0A%7D%20%0D%0Atarget.style.height%3Dh%2B%22px%22%3B%20%0D%0AsetTimeout(onMouseDown.longDiv%2C30)%3B%20%0D%0A%7D%20%0D%0AonMouseDown.longDiv()%3B%20%0D%0A%7D%20%0D%0Aflag%3D!flag%3B%20%0D%0A%7D%20%0D%0Afunction%20init()%7B%20%0D%0Atarget%3Ddocument.getElementById(divid)%3B%20%0D%0Atarget.style.position%20%3D%20%22absolute%22%3B%20%0D%0Atarget.style.width%20%3D%20%22200px%22%3B%20%0D%0Atarget.style.height%20%3D%20%2220px%22%3B%20%0D%0Atarget.style.left%20%3D%20%22100px%22%3B%20%0D%0Atarget.style.top%20%3D%20%22100px%22%3B%20%0D%0Atarget.style.backgroundColor%20%3D%20color%3B%20%0D%0Atarget.onmousedown%20%3D%20onMouseDown%3B%20%0D%0A%7D%20%0D%0Ainit()%3B%20%0D%0A%7D%20%0D%0Anew%20StretchDiv(%22div1%22%2C%22blue%22)%3B%20%0D%0A%3C%2Fscript%3E"> 
</body> 
</html>

　　 [Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

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