function cambiaMenu(index) {
	if (index == 1) {
		document.getElementById('td1').className = 'menuOn'
		document.getElementById('td2').className = 'menuOff'
		document.getElementById('td3').className = 'menuOff'

		document.getElementById('img1').src = 'images/im_head_men_On.gif'
		document.getElementById('img2').src = 'images/im_menu01_On.gif'
		document.getElementById('img3').src = 'images/im_menu02.gif'

		document.getElementById('imgTitu1').src = 'images/bt_linkIndus_on.gif'
		document.getElementById('imgTitu2').src = 'images/bt_linkProduc_off.gif'
		document.getElementById('imgTitu3').src = 'images/bt_linkLeche_off.gif'
		
		document.getElementById('subMenu1').style.display = 'block'
		document.getElementById('subMenu2').style.display = 'none'
		document.getElementById('subMenu3').style.display = 'none'
		document.getElementById('subMenu4').style.display = 'none'
	}
	
	if (index == 2) {
		document.getElementById('td1').className = 'menuOff'
		document.getElementById('td2').className = 'menuOn'
		document.getElementById('td3').className = 'menuOff'

		document.getElementById('img1').src = 'images/im_head_men.gif'
		document.getElementById('img2').src = 'images/im_menu01_On2.gif'
		document.getElementById('img3').src = 'images/im_menu02_On2.gif'

		document.getElementById('imgTitu1').src = 'images/bt_linkIndus_off.gif'
		document.getElementById('imgTitu2').src = 'images/bt_linkProduc_on.gif'
		document.getElementById('imgTitu3').src = 'images/bt_linkLeche_off.gif'
		
		document.getElementById('subMenu1').style.display = 'none'
		document.getElementById('subMenu2').style.display = 'block'
		document.getElementById('subMenu3').style.display = 'none'
		document.getElementById('subMenu4').style.display = 'none'
	}
	
	if (index == 3) {
		document.getElementById('td1').className = 'menuOff'
		document.getElementById('td2').className = 'menuOff'
		document.getElementById('td3').className = 'menuOn'

		document.getElementById('img1').src = 'images/im_head_men.gif'
		document.getElementById('img2').src = 'images/im_menu01.gif'
		document.getElementById('img3').src = 'images/im_menu02_On.gif'

		document.getElementById('imgTitu1').src = 'images/bt_linkIndus_off.gif'
		document.getElementById('imgTitu2').src = 'images/bt_linkProduc_off.gif'
		document.getElementById('imgTitu3').src = 'images/bt_linkLeche_on.gif'
		
		document.getElementById('subMenu1').style.display = 'none'
		document.getElementById('subMenu2').style.display = 'none'
		document.getElementById('subMenu3').style.display = 'block'
		document.getElementById('subMenu4').style.display = 'none'
	}


}