// JavaScript Document
var min=8;
var max=18;
function increaseFontSize() {
   var elements = new Array();
   elements[0] = 'p';
   elements[1] = 'ul';
   elements[2] = 'ol';
   elements[3] = 'table';
   for(k=4;k<10;k++) {
   		elements[k] = 'h' + (k - 3);		
   }
   for(j=0;j<elements.length;j++) {   
   		var e = document.getElementById('blocoCentral').getElementsByTagName(elements[j]);
   		for(i=0;i<e.length;i++) {
      		if(e[i].style.fontSize) {
         		var s = parseInt(e[i].style.fontSize.replace("px",""));
      		} else {
         		var s = 12;
      		}
      		if(s!=max) {
         		s += 1;
      		}
      		e[i].style.fontSize = s+"px"
   		}
	}	
}
function decreaseFontSize() {
   var elements = new Array();
   elements[0] = 'p';
   elements[1] = 'ul';
   elements[2] = 'ol';
   elements[3] = 'table';
   for(k=4;k<10;k++) {
   		elements[k] = 'h' + (k - 3);		
   }
   for(j=0;j<elements.length;j++) {   
   		var e = document.getElementById('blocoCentral').getElementsByTagName(elements[j]);
   		for(i=0;i<e.length;i++) {
      		if(e[i].style.fontSize) {
         		var s = parseInt(e[i].style.fontSize.replace("px",""));
      		} else {
         		var s = 12;
      		}
      		if(s!=min) {
         		s -= 1;
      		}
      		e[i].style.fontSize = s+"px"
   		}
	}	
}