var crtFtSz = 1;
$(document).ready(function(){
$("#contentbody").css({backgroundImage:'none'});
	fontsizectrl();
})
function fontsizectrl(){
	$('#fontsizectrl').click(function(){
			if(crtFtSz != 1.6){
				crtFtSz = crtFtSz + 0.3;
				} else {
					crtFtSz = 1;
				}
			$('#contentbody').css('fontSize', crtFtSz + 'em');
	});
}