//the startup string is already encoded with ':' being replaced with '\t' and then encoded again...
builder.setParameter( "startup-url", startup );
final TextArea urlbox = new TextArea();
//encode any space characters
urlbox.setText( builder.buildString() );
urlbox.setReadOnly( true );
urlbox.setVisibleLines( 3 );
dialogBox.setContent( urlbox );
urlbox.setHeight( "80px" );
urlbox.setWidth( "600px" );