var tags = new Array( 'div','td','tr','p','b','table','strong','emphasis','a','h1','h2','h3','h4','pre','sub','sup','i','th','cp','ul','ol','li','dt','dd');
var pixelArray =  new Array('9','10','12','14','16','20','24','30','40');
var initSize = 3;
		
function fontSizer(inc)
{
	if (!document.getElementById) 
		return;
	
	var size = initSize;
	
	size += inc;
	
	if (size < 0 )
	{
		size = 0;
	}
	if (size > 7 )
	{
		size = 7;
	}
	
	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 = pixelArray[size]+'px';
	}
}