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b01.src="images/inicio_off.gif"
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b02=new Image
b02.src="images/servicios_off.gif"
b22=new Image
b22.src="images/servicios_on.gif"

b03=new Image
b03.src="images/clientes_off.gif"
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b33.src="images/clientes_on.gif"

b04=new Image
b04.src="images/convenio_off.gif"
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b44.src="images/convenio_on.gif"

b05=new Image
b05.src="images/contacto_off.gif"
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b55.src="images/contacto_on.gif"

b06=new Image
b06.src="images/formacion_off.gif"
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b66.src="images/formacion_on.gif"

b07=new Image
b07.src="images/empleo_off.gif"
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b77.src="images/empleo_on.gif"