How to modify HTML immediatley after loading it??

Question

I have created a web browser and I need it to have large text size as default (i.e as soon as a web page is loaded). I have written the code to do this and it works when assigned to a Jbutton.
However if use the doClick() method to invoke the button immediatley after the HTML page is loaded(using the setPage method) the HTML remains the same.
There was a suggestion that the font resizing is being done before the document is fully loaded. So I tried to synchronize the thread of my largeText method and delay execution of the doClick by using the SwingUtilities.invokeLater method.
This never worked does anybody have a solution to this problem??
Below is the code of my Display and largetext methods.
if (e.getSource().equals(largeText)){
Thread runner = new Thread() {
public synchronized void run() {
HTMLDocument doc = ((HTMLDocument) htmlMain.getDocument());
doc.setCharacterAttributes(0, htmlMain.getDocument().getLength(), doc.getStyleSheet()
.getDeclaration("font-size:24"), false);
runner.start();
SwingUtilities.invokeLater(runner);
} // End if
public void DisplayPage(String strURL) {
currentURL = strURL;
textURL.setText(strURL);
//m_btnReload.setToolTipText(strURL);
try {
setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
htmlMain.setPage(strURL);
SwingUtilities.invokeLater(new Runnable() {
public void run() {
largeText.doClick();
catch (Exception exc) {
htmlMain.setText("");
statusBar.setText("Could not open starting page. Using a blank.");
finally {
setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
} //end try
//largeText.doClick();
}

Answer 1

You didn't set the width and height to 20. You set the
magnification to 20 percent. That's what _xscale and _yscale are:
the percentage by which an object is scaled (enlarged or reduced).
If you want to set an image's actual width and height:
image._width = 20;
image._height = 20;