svg图案可以随着div层缩小放大？

[code=javascript<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>可以拖拽鼠标来改变DIV层的大小
http://www.51xuediannao.com</title>
<head>
<style>
{box-sizing: border-box;
moz-box-sizing: border-box;
}
#testDiv{
background-color: buttonface;
background-repeat: repeat;
background-attachment: scroll;
color: #3969A5;
height: 300px;
left: 30px;
overflow: hidden;
width: 500;
z-index: 2;
border: 2px outset white;
margin: 0px; padding: 2px;
background-position: 0% 50% }
body{ font-family: Verdana;
font-size: 9pt }
#innerNice{
background-color: white;
background-repeat: repeat;
background-attachment: scroll;
color: #3969A5;
height: 100%;
overflow: auto;
width: 100%;
border: 2px inset white;
padding: 8px;
background-position: 0% 50% }
</style>

<SCRIPT language=javascript>

var theobject = null; //This gets a value as soon as a resize start

function resizeObject() {
this.el = null; //pointer to the object
this.dir = ""; //type of current resize (n, s, e, w, ne, nw, se, sw)
this.grabx = null; //Some useful values
this.graby = null;
this.width = null;
this.height = null;
this.left = null;
this.top = null;
}


//Find out what kind of resize! Return a string inlcluding the directions
function getDirection(el) {
var xPos, yPos, offset, dir;
dir = "";

xPos = window.event.offsetX;
yPos = window.event.offsetY;

offset = 8; //The distance from the edge in pixels

if (yPos<offset) dir += "n";
else if (yPos > el.offsetHeight-offset) dir += "s";
if (xPos<offset) dir += "w";
else if (xPos > el.offsetWidth-offset) dir += "e";

return dir;
}

function doDown() {
var el = getReal(event.srcElement, "className", "resizeMe");

if (el == null) {
theobject = null;
return;
}

dir = getDirection(el);
if (dir == "") return;

theobject = new resizeObject();

theobject.el = el;
theobject.dir = dir;

theobject.grabx = window.event.clientX;
theobject.graby = window.event.clientY;
theobject.width = el.offsetWidth;
theobject.height = el.offsetHeight;
theobject.left = el.offsetLeft;
theobject.top = el.offsetTop;

window.event.returnValue = false;
window.event.cancelBubble = true;
}

function doUp() {
if (theobject != null) {
theobject = null;
}
}

function doMove() {
var el, xPos, yPos, str, xMin, yMin;
xMin = 8; //The smallest width possible
yMin = 8; // height

el = getReal(event.srcElement, "className", "resizeMe");

if (el.className == "resizeMe") {
str = getDirection(el);
//Fix the cursor
if (str == "") str = "default";
else str += "-resize";
el.style.cursor = str;
}

//Dragging starts here
if(theobject != null) {
if (dir.indexOf("e") != -1)
theobject.el.style.width = Math.max(xMin, theobject.width +

window.event.clientX - theobject.grabx) + "px";

if (dir.indexOf("s") != -1)
theobject.el.style.height = Math.max(yMin, theobject.height +

window.event.clientY - theobject.graby) + "px";

if (dir.indexOf("w") != -1) {
theobject.el.style.left = Math.min(theobject.left +

window.event.clientX - theobject.grabx, theobject.left + theobject.width - xMin) +

"px";
theobject.el.style.width = Math.max(xMin, theobject.width -

window.event.clientX + theobject.grabx) + "px";
}
if (dir.indexOf("n") != -1) {
theobject.el.style.top = Math.min(theobject.top +

window.event.clientY - theobject.graby, theobject.top + theobject.height - yMin) +

"px";
theobject.el.style.height = Math.max(yMin, theobject.height -

window.event.clientY + theobject.graby) + "px";
}

window.event.returnValue = false;
window.event.cancelBubble = true;
}
}


function getReal(el, type, value) {
temp = el;
while ((temp != null) && (temp.tagName != "BODY")) {
if (eval("temp." + type) == value) {
el = temp;
return el;
}
temp = temp.parentElement;
}
return el;
}

document.onmousedown = doDown;
document.onmouseup = doUp;
document.onmousemove = doMove;
</SCRIPT>
</head>

<body>




<div class="resizeMe" id="testDiv">
<div id="innerNice">
<svg xmlns="http://www.w3.org/2000/svg" version="1.1"width:100%; height="100%">
<polygon points="100,10 40,180 190,60 10,60 160,180"
style="fill:lime;stroke:purple;stroke-width:5;fill-rule:evenodd;" />
</svg> </div>
</div>



</body>
][/code]