// funções para manipular classes de objetos DOM //
function getArrayFromClasses( obj ) {
	var classes = obj.className.split(" ");
	if( classes.length == 1 && classes[0] == "" ) {
		classes = new Array();
	}
	return classes;
}

function setClassesStringFromArray( classes ) {
	return classes.join(" ");
}

function addClass( obj, className ) {
	var classes = getArrayFromClasses( obj );
	classes.push( className );
	obj.className = setClassesStringFromArray( classes );
}

function removeClass( obj, className ) {
	var classes = getArrayFromClasses( obj );
	for(i in classes) {
		if(classes[i] == className) {
		classes.splice(i,1);
		}
	}
	obj.className = setClassesStringFromArray( classes );  
}

function clearClasses( obj ) {
	var classes = new Array();
	obj.className = setClassesStringFromArray( classes );
}

function existsClass( obj, className ) {
	var classes = getArrayFromClasses( obj );
	for(i in classes) {
		if(classes[i] == className) {
			return true;
		}
	}
	return false;
}

function resizeFrame( obj ) {
	if(obj.contentWindow.document.getElementById("container")) {
		obj.style.height = obj.contentWindow.document.getElementById("container").offsetHeight.toString() + "px";
	}
}

function formatTable() {
	var tr = document.getElementsByTagName("table")[0].getElementsByTagName("tbody")[0].getElementsByTagName("tr");
	
	for( var i = 0; i<tr.length; i++ ) {
		if( i % 2 != 0 ) {
			addClass( tr[i], "odd" );
		}
	}
}

function setVariations() {
	var tr = document.getElementsByTagName("table")[0].getElementsByTagName("tbody")[0].getElementsByTagName("tr");
	var atual;
	var anterior;
	
	for( var i = 0; i<tr.length; i++ ) {
		atual = parseInt(tr[i].getElementsByTagName("th")[0].innerHTML.replace(/[^0-9]/g,""), 10);
		anterior = parseInt(tr[i].getElementsByTagName("td")[0].innerHTML.replace(/[^0-9]/g,""), 10);
		
		if( atual < anterior ) {
			addClass( tr[i].getElementsByTagName("th")[0], "sobe" );
		} else if ( atual > anterior ) 	{
			addClass( tr[i].getElementsByTagName("th")[0], "desce" );
		} else if ( atual == anterior ) {
			addClass( tr[i].getElementsByTagName("th")[0], "estavel" );
		}
	}
}

function changeAba( obj ) {
	var ul = obj.parentNode.parentNode;
	var li = ul.getElementsByTagName("li");
	
	for(var i=0; i<li.length; i++ ) {
		removeClass( li[i], "ativo" );
	}
	
	addClass( obj.parentNode, "ativo" );  
}

function OpenJanela(pop,url,largura,altura,nome) {
  window.open(pop,nome,"width="+largura+", height="+altura);
  document.location=url;
}