/******************************
Change  Fonte
******************************/

function fontChange(direction, mainclass) {

	var div = document.getElementById(mainclass);
	var classe = div.className;
	var num = classe.substr(classe.indexOf('_') + 1) * 1;
	if(direction == '+'){
		if(num <= 2){
			num = num + 1 ;
		} 
	}else{
		if(num - 1 >=1){
			num = num -1 ;
		} 
	}
	div.className = "fontsize_"+num ; 
}