var textPointer = 2;
var textsize=new Array();
textsize[0] = 50.5;
textsize[1] = 56.5;
textsize[2] = 62.5;
textsize[3] = 68.5;
textsize[4] = 74.5;
textsize[5] = 80.5;



$(document).ready(function() {
               $(".plus").click(function() {
               		if (textPointer <= (textsize.length-1)){
               			textPointer++;
                  		$("body").css("font-size", textsize[textPointer]+"%");
					}
               });
});

$(document).ready(function() {
               $(".minus").click(function() {
               		if (textPointer >= 0){
               			textPointer--;
                  		$("body").css("font-size", textsize[textPointer]+"%");
					}
               });
});