// função responsável pelas janelas
function pop_up(url,nome,w,h,x,y,r,s,sb){
w="width="+w
h=",height="+h
x=",top="+x
y=",left="+y
r=",resize="+r
s=",status="+s
sb=",scrollbars="+sb
janela=window.open(url,nome,w+h+x+y+r+s+sb);
janela.self.focus();
}