var small = '.7em';
var medium = '.9em';
var large = '1.4em';


function changeFontSize(size) 
{
	switch(size)
	{
		case 'small': em = small; break;
		case 'medium': em = medium; break;
		case 'large': em = large; break;
	}
   var left = document.getElementById('leftcopy');
   var h1 = document.getElementsByTagName('h1');
   document.getElementById('leftcopy').style.fontSize = em;
   document.getElementById('right').style.fontSize = em;

   //barrier free nav
   document.getElementById('accessnav').style.fontSize = em;
   if(size=='medium')
		document.getElementById('accessnav').style.fontSize = '.8em';
   if(size=='large')
		document.getElementById('accessnav').style.fontSize = '1em';

	//lang nav 
	if(size=='small')
		document.getElementById('headerlang').style.fontSize = '.9em';
	if(size=='medium')
		document.getElementById('headerlang').style.fontSize = '1em';
	if(size=='large')
		document.getElementById('headerlang').style.fontSize = '1.1em';

	//header tools nav 
	if(size=='small')
		document.getElementById('headertools').style.fontSize = '.9em';
	if(size=='medium')
		document.getElementById('headertools').style.fontSize = '1em';
	if(size=='large')
		document.getElementById('headertools').style.fontSize = '1.1em';

	//page nav 
	if(size=='small')
		document.getElementById('pagenav').style.fontSize = '1em';
	if(size=='medium')
		document.getElementById('pagenav').style.fontSize = '1.1em';
	if(size=='large')
		document.getElementById('pagenav').style.fontSize = '1.2em';

   //page titles
   for(i=0;i<h1.length;i++) {
	  var adjsize = parseFloat(em.replace("em","")) + .4 + 'em';
      h1[i].style.fontSize = adjsize;
   }   
}