I am using processing to take xml data from a source and utilise it to change the diameter of a number of cirlces on screen, this works fine when run as an application, or from processing but when used as an applet on a webpage the java console throws up an error saying "cannot create reader?" Is this just a problem with processing.xml or is my code completely screwy!

Code below:

import processing.xml.*;
XMLElement xml;

void setup() {
   size(600, 600);
}


void draw() {
 background(255,255,255);
 xml = new XMLElement(this, "http://arch-os.scce.plymouth.ac.uk/xml_data.php?source=all_vis");
 XMLElement kid = xml.getChild(4).getChild(3);  
 String xmlData = kid.getContent();
 int list[] = int(split(xmlData, ", "));
//print(list[221]);
for (int i = 200; i > 150; i = i-3) {
float a = random(20,255);
int b = int(a);
stroke(20*list[i],200,b);
noFill();
smooth();
ellipse(300, 300, (list[i]*10), (list[i]*10));
}
}