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how to load image from a subdirectory on server

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Hi frnds,
please help me with this. I am trying to display an image on the applet. the image resides in the "images/listBackgr.gif" directory on the server and the applet is placed on the root path. with i try to access the image from the Applet using the code following i get an error.
JLabel imgTry = new JLabel();
imgTry.setIcon(new ImageIcon(getCodeBase() + "/images/listBackgr.gif"));

The Error is......

java.security.AccessControlException: access denied (java.io.FilePermission http://localhost/envoy_ws_new/Live/EN//images/listBackgr.gif read)
at java.security.AccessControlContext.checkPermission(AccessControlConte
at java.security.AccessController.checkPermission(AccessController.java:
at java.lang.SecurityManager.checkPermission(SecurityManager.java:542)
at java.lang.SecurityManager.checkRead(SecurityManager.java:887)
at sun.awt.SunToolkit.getImageFromHash(SunToolkit.java:486)
at sun.awt.SunToolkit.getImage(SunToolkit.java:500)
at javax.swing.ImageIcon.<init>(ImageIcon.java:81)
at javax.swing.ImageIcon.<init>(ImageIcon.java:107)
at ClassMatrix1.init(ClassMatrix1.java:143)
at sun.applet.AppletPanel.run(AppletPanel.java:348)
at java.lang.Thread.run(Thread.java:536)

could someone help me sort this problem out.....will i have to sign the applet???... or can i just solve it by making changes in the code.
Quick response is appriciated.
Thanx in advance.
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