function tab(valor){
			switch(valor){
				case 1:
					document.getElementById("tab1").style.background = "#FFF";
					document.getElementById("tab1").style.fontWeight = "bold";					
					document.getElementById("tab2").style.background = "none";
					document.getElementById("tab2").style.fontWeight = "normal";
					document.getElementById("tabContent2").style.display = "none";
					document.getElementById("tab3").style.background = "none";
					document.getElementById("tab3").style.fontWeight = "normal";	
					document.getElementById("tabContent3").style.display = "none";					
					$("#tabContent1").fadeIn("slow");					
					break;
				case 2:
					document.getElementById("tab1").style.background = "none";
					document.getElementById("tab1").style.fontWeight = "normal";					
					document.getElementById("tabContent1").style.display = "none";					
					document.getElementById("tab2").style.background = "#FFF";
					document.getElementById("tab2").style.fontWeight = "bold";
					document.getElementById("tab3").style.background = "none";
					document.getElementById("tab3").style.fontWeight = "normal";
					document.getElementById("tabContent3").style.display = "none";					
					$("#tabContent2").fadeIn("slow");
					break;
				case 3:
					document.getElementById("tab1").style.background = "none";
					document.getElementById("tab1").style.fontWeight = "normal";
					document.getElementById("tabContent1").style.display = "none";					
					document.getElementById("tab2").style.background = "none";
					document.getElementById("tab2").style.fontWeight = "normal";
					document.getElementById("tabContent2").style.display = "none";					
					document.getElementById("tab3").style.background = "#FFF";
					document.getElementById("tab3").style.fontWeight = "bold";					
					$("#tabContent3").fadeIn("slow");
					break;
			}
			
		}