function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		but_desenvolvimento_over = newImage("images/interface/but_desenvolvimento_over.gif");
		but_close_over = newImage("images/buttons/but_close_over.gif");
		but_encerrar = newImage("images/buttons/but_encerrar_over.gif");
		but_design_over = newImage("images/interface/but_design_over.gif");
		preloadFlag = true;
	}
}

function openWin(pUrl,wName,w,h,scroll)
{
  
var winl = ((screen.width-w)/2)-4
  var wint = ((screen.height-h)/3)-10;
  var settings  ='height='+h+',';
     settings +='width='+w+',';
     settings +='top='+wint+',';
     settings +='left='+winl+',';
     settings +='scrollbars=yes,';
     settings +='resizable=yes';
	 window.open(pUrl, wName, settings);
}