在网页里做类似window右键的弹出式菜单

做一个类似于window右键的弹出式菜单。

代码如下：

var obj;

function loadobj(o)

{

obj=o;

}

function expand()

{

var h=parseInt(obj.height);

var w=parseInt(obj.width);

var op=10;

if( h<=170 )

{

if( w<60 )

obj.style.width=w+6;

obj.style.height=h+17;

x=setTimeout('expand()', 25);

}

else

{

obj.style.width=60;

obj.style.height=174;

clearTimeout(x);

}

}

var drag=0;

var move=0;

function Dblclick()

{

if (event.button==0)

{

obj.style.visibility="visible";

obj.style.left=window.event.x;

obj.style.top =window.event.y;

obj.style.width=0;

obj.style.height=0;

obj.filters.item(0).apply();

obj.filters.item(0).transition = 25;

obj.filters(0).play(0.5);

expand();

}

}

function MouseMove()

{

if(move==1)

{

obj.style.cursor="move";

obj.style.left=window.event.x-l;

obj.style.top=window.event.y-t;

}

}

function MouseDown()

{

if(drag)

{

l = window.event.x - parseInt(obj.style.left);

t = window.event.y - parseInt(obj.style.top);

obj.style.zIndex+=1;

move=1;

}

else

{

document.body.style.cursor='default';

obj.style.visibility='hidden';

}

}

function MouseStop()

{

window.event.returnValue=false;

}

function MouseUp()

{

move=0;

obj.style.cursor="hand";

}

document.ondblclick=Dblclick;

document.onmousedown=MouseDown;

document.onmousemove=MouseMove;

document.ondragstart=MouseStop;

document.onmouseup=MouseUp;