function showdiv(objDivID) {
		if (objDivID == 'content0') {

			document.getElementById('content0').className = 'zindex1';
			document.getElementById('content1').className = 'zindex0';
			document.getElementById('content2').className = 'zindex0';
			document.getElementById('content3').className = 'zindex0';
			/*document.getElementById('content4').className = 'zindex0';*/
			document.getElementById('content5').className = 'zindex0';
			document.getElementById('content6').className = 'zindex0';

			document.getElementById('bottone1').className = 'bottone';
			document.getElementById('bottone2').className = 'bottone';
			document.getElementById('bottone3').className = 'bottone';
			/*document.getElementById('bottone4').className = 'bottone';*/
			document.getElementById('bottone5').className = 'bottone';
			document.getElementById('bottone6').className = 'bottone last';
		}else {}
		if (objDivID == 'content1') {
			document.getElementById('content1').className = 'zindex1';
			document.getElementById('content2').className = 'zindex0';
			document.getElementById('content3').className = 'zindex0';
			/*document.getElementById('content4').className = 'zindex0';*/
			document.getElementById('content5').className = 'zindex0';
			document.getElementById('content6').className = 'zindex0';
			document.getElementById('content0').className = 'zindex0';
			document.getElementById('bottone1').className = 'bottoneon';
			document.getElementById('bottone2').className = 'bottone';
			document.getElementById('bottone3').className = 'bottone';
			/*document.getElementById('bottone4').className = 'bottone';*/
			document.getElementById('bottone5').className = 'bottone';
			document.getElementById('bottone6').className = 'bottone last';
		}else {}

		if (objDivID == 'content2') {
			document.getElementById('content1').className = 'zindex0';
			document.getElementById('content2').className = 'zindex1';
			document.getElementById('content3').className = 'zindex0';
			/*document.getElementById('content4').className = 'zindex0';*/
			document.getElementById('content5').className = 'zindex0';
			document.getElementById('content6').className = 'zindex0';
			document.getElementById('content0').className = 'zindex0';
			document.getElementById('bottone1').className = 'bottone';
			document.getElementById('bottone2').className = 'bottoneon';
			document.getElementById('bottone3').className = 'bottone';
			/*document.getElementById('bottone4').className = 'bottone';*/
			document.getElementById('bottone5').className = 'bottone';
			document.getElementById('bottone6').className = 'bottone last';
		}else {}

		if (objDivID == 'content3') {
			document.getElementById('content1').className = 'zindex0';
			document.getElementById('content2').className = 'zindex0';
			document.getElementById('content3').className = 'zindex1';
			/*document.getElementById('content4').className = 'zindex0';*/
			document.getElementById('content5').className = 'zindex0';
			document.getElementById('content6').className = 'zindex0';
			document.getElementById('content0').className = 'zindex0';
			document.getElementById('bottone1').className = 'bottone';
			document.getElementById('bottone2').className = 'bottone';
			document.getElementById('bottone3').className = 'bottoneon';
			/*document.getElementById('bottone4').className = 'bottone';*/
			document.getElementById('bottone5').className = 'bottone';
			document.getElementById('bottone6').className = 'bottone last';
		}else {}

		if (objDivID == 'content4') {
			document.getElementById('content1').className = 'zindex0';
			document.getElementById('content2').className = 'zindex0';
			document.getElementById('content3').className = 'zindex0';
			/*document.getElementById('content4').className = 'zindex1';*/
			document.getElementById('content5').className = 'zindex0';
			document.getElementById('content6').className = 'zindex0';
			document.getElementById('content0').className = 'zindex0';
			document.getElementById('bottone1').className = 'bottone';
			document.getElementById('bottone2').className = 'bottone';
			document.getElementById('bottone3').className = 'bottone';
			/*document.getElementById('bottone4').className = 'bottoneon';*/
			document.getElementById('bottone5').className = 'bottone';
			document.getElementById('bottone6').className = 'bottone last';
		}else {}

		if (objDivID == 'content5') {
			document.getElementById('content1').className = 'zindex0';
			document.getElementById('content2').className = 'zindex0';
			document.getElementById('content3').className = 'zindex0';
			/*document.getElementById('content4').className = 'zindex0';*/
			document.getElementById('content5').className = 'zindex1';
			document.getElementById('content6').className = 'zindex0';
			document.getElementById('content0').className = 'zindex0';
			document.getElementById('bottone1').className = 'bottone';
			document.getElementById('bottone2').className = 'bottone';
			document.getElementById('bottone3').className = 'bottone';
			/*document.getElementById('bottone4').className = 'bottone';*/
			document.getElementById('bottone5').className = 'bottoneon';
			document.getElementById('bottone6').className = 'bottone last';
		}else {}

		if (objDivID == 'content6') {
			document.getElementById('content1').className = 'zindex0';
			document.getElementById('content2').className = 'zindex0';
			document.getElementById('content3').className = 'zindex0';
			/*document.getElementById('content4').className = 'zindex0';*/
			document.getElementById('content5').className = 'zindex0';
			document.getElementById('content6').className = 'zindex1';
			document.getElementById('content0').className = 'zindex0';
			document.getElementById('bottone1').className = 'bottone';
			document.getElementById('bottone2').className = 'bottone';
			document.getElementById('bottone3').className = 'bottone';
			/*document.getElementById('bottone4').className = 'bottone';*/
			document.getElementById('bottone5').className = 'bottone';
			document.getElementById('bottone6').className = 'bottoneon last';
		}else {}

    }