function changeFontSize(inc){
	var aa = new Array('body', 'td', 'div', 'p', 'font', 'a', 'span');
	for(i=0; i<aa.length; i++){
		var p = document.getElementsByTagName(aa[i]);
		for(n=0; n<p.length; n++) {
			if(p[n].style.fontSize) {
				var size = parseInt(p[n].style.fontSize.replace("px", ""));
			} else {
				var size = 12;
			}
			p[n].style.fontSize = size+inc + 'px';
		}
	}
}

var current_cat_links = 0;
function change_to_category_links(param){
	var curr_id = document.getElementById('right-category-' + current_cat_links);
	var next_id = document.getElementById('right-category-' + param);
	if( curr_id ){
		curr_id.style.display = 'none';
	}
	if( next_id ){
		next_id.style.display = '';
	}
	current_cat_links = param;
}