function make_small(){
if(document.getElementById('texted')){
var content = document.getElementById('texted');
content.id = 'content';
}
return false;
}


function make_large(){
if(document.getElementById('content')){
var content = document.getElementById('content');
content.id = 'texted';
}
return false;
}

window.onload = function(){

var large = document.getElementById('add_text_size');
var small = document.getElementById('subtract_text_size');

large.onclick = make_large;
small.onclick = make_small;

}