var win=null;
function NewWindow(mypage,myname,w,h,scroll,pos){

if(pos=="random"){LeftPosition=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;TopPosition=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;}

if(pos=="center"){LeftPosition=(screen.width)?(screen.width-w)/2:100;TopPosition=(screen.height)?(screen.height-h)/2:100;}

else if((pos!="center" && pos!="random") || pos==null){LeftPosition=0;TopPosition=20}

settings='width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no';

win=window.open(mypage,myname,settings);}

function abrir_janela(pagina) {
	window.open(pagina,"mywindow","width=300,height=400,left=200,top=200,screenX=200,screenY=200,scrollbars=yes");
}