// JavaScript Document

//Create a center popup
function createwindow(url, largura, altura,Scroll,nome){
	esq = (screen.availWidth - largura ) / 2 ;
	cim  = (screen.availHeight - altura) / 2 -10 ;	
	janela = window.open(url,nome,"toolbar=no,width="+ largura + ",height=" + altura + ",left=" + esq + ",top=" + cim + ",scrollbars="+ Scroll +",directories=no,status=no,resize=no,menubar=no")
	return janela;
} 

function toggleLayer(whichLayer){
	if (document.getElementById){
		// this is the way the standards work
		var style2 = document.getElementById(whichLayer).style;
		style2.display = style2.display? "":"block";
	}else if (document.all){
		// this is the way old msie versions work
		var style2 = document.all[whichLayer].style;
		style2.display = style2.display? "":"block";
	}else if (document.layers){
		// this is the way nn4 works
		var style2 = document.layers[whichLayer].style;
		style2.display = style2.display? "":"block";
	}
}