How do I keep GUI Buttons one size?

Hi.

I made a working level select menu but I have a problem.

the buttons aren’t the same width.
alt text

As you can see, some are wider than others.
So does anyone have a method to stop buttons from changing the width?

This is the code I use for each row(Just copied the first horizontal row into here)

//START1-----------------------------------------------------------------------------------------------------
		GUILayout.BeginHorizontal();
		
		GUI.skin = MenuGUISkin;
		if(GUILayout.Button("Level-1", GUILayout.Height(buttonHeight)))
		{
			Application.LoadLevel("Level_1");
			audio.PlayOneShot(clickSound);
		}

		//Level 2
		if(levelReached >= 2)
		{
			GUI.skin = MenuGUISkin;
			if(GUILayout.Button("Level-2", GUILayout.Height(buttonHeight)))
			{
				Application.LoadLevel("Level_2");
				audio.PlayOneShot(clickSound);
			}
		}
		else 
		{
			GUI.skin = lockedLevels;
			if(GUILayout.Button("Level-2", GUILayout.Height(buttonHeight)))
			{
				audio.PlayOneShot(clickSound);
			}
		}
		
		//Level 3
		if(levelReached >= 3)
		{
			GUI.skin = MenuGUISkin;
			if(GUILayout.Button("Level-3", GUILayout.Height(buttonHeight)))
			{
				Application.LoadLevel("Level_3");
				audio.PlayOneShot(clickSound);
			}
		}
		else 
		{
			GUI.skin = lockedLevels;
			if(GUILayout.Button("Level-3", GUILayout.Height(buttonHeight)))
			{
				audio.PlayOneShot(clickSound);
			}
		}
		
		
		GUILayout.EndHorizontal();
		//END1-------------------------------------------------------------------------------------------------------

You could set the button width in the same way as you fixed the height. eg. GUILayout.Width(buttonWidth).

Looking at your layout however I would be tempted to just used a GUILayout.SelectionGrid