var percentArray = new Array('50%','75%','90%','100%','110%','125%','150%');
var initSize = 3;

function fontSizer(inc) {
	if (!document.getElementsByTagName) { return; };
	var size = initSize;
	size += inc;
	if (size < 0 ) { size = 0; }
	if (size > 6 ) { size = 6; }
	initSize = size;	
	document.getElementsByTagName('body')[0].style.fontSize = percentArray[size];
  }
  
 function fontReset() {
	if (!document.getElementsByTagName) { return; };
	initSize = 3;
	document.getElementsByTagName('body')[0].style.fontSize = percentArray[3];
  }