function AbrePopUp(pURL,NumLargura,NumAltura) 
{
	var width	  = NumLargura;
	var height	  = NumAltura;
	var left	  = window.screen.width/2 - width/2;
	var top		  = window.screen.height/2 - height/2 - 50;

	top	 = (top < 0 ? 0 : top)
	left = (left < 0 ? 0 : left)
	
	window.open(pURL , 'PopUp', 'WIDTH=' + width + ',HEIGHT=' + height + ',TOOLBAR=NO,LOCATION=NO,DIRECTORIES=NO,STATUS=NO,SCROLLBARS=NO,MENUBAR=NO,RESIZABLE=NO,TITLEBAR=YES,TOP=' + top + ',LEFT=' + left);
}