function switchCol(to_switch){
	switch (to_switch) {
		case 'Boltot' :
			document.getElementById("Boltot").style.display="";			
			document.getElementById("Olot").style.display="none";
			document.getElementById("Yordot").style.display="none";
			document.getElementById("lnkBoltot").className="Tab_Text_Selected"
			document.getElementById("lnkOlot").className="Tab_Text"
			document.getElementById("lnkYordot").className="Tab_Text"
			break;
		case 'Olot' :
			document.getElementById("Boltot").style.display="none";			
			document.getElementById("Olot").style.display="";
			document.getElementById("Yordot").style.display="none";
			document.getElementById("lnkBoltot").className="Tab_Text"
			document.getElementById("lnkOlot").className="Tab_Text_Selected"
			document.getElementById("lnkYordot").className="Tab_Text"
			break;
		case 'Yordot' :
			document.getElementById("Boltot").style.display="none";			
			document.getElementById("Olot").style.display="none";
			document.getElementById("Yordot").style.display="";
			document.getElementById("lnkBoltot").className="Tab_Text"
			document.getElementById("lnkOlot").className="Tab_Text"
			document.getElementById("lnkYordot").className="Tab_Text_Selected"
			break;		
	}	
 }