// JavaScript Document
	function mostrar_tabla(cual) {
		switch (cual) {
			case 1: 
				/*document.getElementById('servB').style.display="";
				document.getElementById('servB2').style.display="";
				document.getElementById('servB3').style.display="";*/
				document.getElementById('servA').style.display="none";
				document.getElementById('servA2').style.display="none";
				document.getElementById('servA3').style.display="none";
				break;
			case 2: 
				/*document.getElementById('servB').style.display="none";
				document.getElementById('servB2').style.display="none";
				document.getElementById('servB3').style.display="none";*/
				document.getElementById('servA').style.display="none";
				document.getElementById('servA2').style.display="none";
				document.getElementById('servA3').style.display="none";
				document.getElementById('servC').style.display="";
				document.getElementById('servC2').style.display="";
				document.getElementById('servC3').style.display="";
				break;
			case 21: 
				/*document.getElementById('servB').style.display="none";
				document.getElementById('servB2').style.display="none";
				document.getElementById('servB3').style.display="none";*/
				document.getElementById('servA').style.display="";
				document.getElementById('servA2').style.display="";
				document.getElementById('servA3').style.display="";
				break;				
			case 3: 
				/*document.getElementById('servB').style.display="";
				document.getElementById('servB2').style.display="";
				document.getElementById('servB3').style.display="";*/
				document.getElementById('servC').style.display="none";
				document.getElementById('servC2').style.display="none";
				document.getElementById('servC3').style.display="none";
				document.getElementById('servA').style.display="";
				document.getElementById('servA2').style.display="";
				document.getElementById('servA3').style.display="";
				break;				

		}	
	}
	
	function ocultar() {
		if (document.getElementById('curso').style.display == "") 
			document.getElementById('curso').style.display="none"; 
		else 	
			document.getElementById('curso').style.display=""; 
	}