var min=8;
var max=18;
var current=13;
function increaseFontSize() {
	if (current<max) {
	   current+=1;
	   var obj=$("contentArticol");
	   obj.setStyle("font-size",current);
	}
}
function decreaseFontSize() {
   if (current>min) {
	   current-=1;
	   var obj=$("contentArticol");
	   obj.setStyle("font-size",current);
	}   
}