function changeStyles() { 
defaultSheet = document.getElementById('large'); 
defaultSheet.disabled = true; 
defaultSheet = document.getElementById('medium'); 
defaultSheet.disabled = true; 
newSheet = document.getElementById('small'); 
newSheet.disabled = false; 
return true; 
}

function changeStyles2() { 
defaultSheet = document.getElementById('small'); 
defaultSheet.disabled = true; 
defaultSheet = document.getElementById('large'); 
defaultSheet.disabled = true; 
newSheet = document.getElementById('medium'); 
newSheet.disabled = false;
return true; 
}

function changeStyles3() { 
defaultSheet = document.getElementById('small'); 
defaultSheet.disabled = true; 
defaultSheet = document.getElementById('medium'); 
defaultSheet.disabled = true; 
newSheet = document.getElementById('large'); 
newSheet.disabled = false; 
}

function smtxt() {if (document.images) document.Text.src='/images/font_01.gif'}
function medtxt() {if (document.images) document.Text.src='/images/font_02.gif'}
function lgtxt() {if (document.images) document.Text.src='/images/font_03.gif'}