if (IE4){
  canvas.style.clip = "rect(0 " + canvasWidth + " " + canvasHeight + " 0)";
}
else {
  canvas.clip.width = canvasWidth;
  canvas.clip.height= canvasHeight;
}

Learn more from a real example that uses this clipping region in Column 32, Setting Up the Viewing Area.

People who read this tip also read these tips:

• Print Template's Behaviors
• Manipulating a Selection
• Detecting the Event's Direction
• The Document's First Child
• The !DOCTYPE Switch