function mastTabs(i) {
	document.getElementById("one").style.display = (i == "on-one") ? "block" : "none";
	document.getElementById("two").style.display = (i == "on-two") ? "block" : "none";
	document.getElementById("three").style.display = (i == "on-three") ? "block" : "none";
	document.getElementById("four").style.display = (i == "on-four") ? "block" : "none";
	document.getElementById("five").style.display = (i == "on-five") ? "block" : "none";
	document.getElementById("six").style.display = (i == "on-six") ? "block" : "none";
	document.getElementById("seven").style.display = (i == "on-seven") ? "block" : "none";
	document.getElementById("eight").style.display = (i == "on-eight") ? "block" : "none";
	document.getElementById("nine").style.display = (i == "on-nine") ? "block" : "none";
	document.getElementById("ten").style.display = (i == "on-ten") ? "block" : "none";
	
	document.getElementById("mast-tab").className = i;
}