var browserName=navigator.appName; 
var tags = new Array( 'div','td','tr','p','b','table','strong','emphasis','a','h1','h2','h3','pre','sub','sup','i','th','cp','ul','ol','li','dt','dd');
 if (browserName=="Microsoft Internet Explorer") {
	var exArray =  new Array('1.7','1.8','1.9','2','2.1','2.2','2.3');
 }
 else {
	 var exArray =  new Array('1.4','1.5','1.6','1.7','1.8','1.9','2');
 }
 
var initSize = 2;

function fontSizer(inc,unit) {
	if (!document.getElementById) 
		return;
	var size = initSize;
		size += inc;
	if (size < 0 ) {
		size = 0;
		alert("GLSE Scouts \n\nThe font cannot be made smaller");		
}
	if (size > 6 ) {
		size = 6;
		alert("GLSE Scouts \n\nThe font cannot be made bigger");
}
		initSize = size;
		getBody = document.getElementsByTagName('body')[0];
	for (i = 0 ; i < tags.length ; i++ ) {
		getallTags = getBody.getElementsByTagName(tags[i]);
	for (k = 0 ; k < getallTags.length ; k++) 
		getallTags[k].style.fontSize = exArray[size]+unit;
	}
}