flot and excanvas issue

gistfile1.js

//jquery.flot:

canvas = $('<canvas width="' + canvasWidth + '" height="' + canvasHeight + '"></canvas>').appendTo(target).get(0);
if ($.browser.msie) {
// excanvas hack
canvas = window.G_vmlCanvasManager.initElement(canvas);
}
ctx = canvas.getContext("2d");

//IE6 needs the canvas element initialised like this instead
var canvasHTMLDOM = document.createElement("canvas");
jQuery(target).append(canvasHTMLDOM);
if ($.browser.msie) {
// excanvas hack
canvas = window.G_vmlCanvasManager.initElement(canvas);
}