function como_conheceu()
 {
   switch (document.all.Conheceu_a_Escola.selectedIndex) {
   	 case 0:
       document.all.area.innerHTML = "";
       break;
   	 case 1:
       document.all.area.innerHTML = "";
       break;
   	 case 2:
       document.all.area.innerHTML = "";
       break;
   	 case 3:
       document.all.area.innerHTML = "";
       break;
   	 case 4:
       document.all.area.innerHTML = "";
       break;
   	 case 5:
       document.all.area.innerHTML = "";
       break;
   	 case 6:
       document.all.area.innerHTML = "";
       break;
     case 7:
       document.all.area.innerHTML = "<input type=\"text\" name=\"Conheceu_a_Escola_extenso\" value=\"Qual?\" size=\"35\" onblur=\"if(this.value==''){this.value='Qual?';}\"  onfocus=\"if(this.value=='Qual?'){this.value='';}\">";
       break;
    	
   }
 }

function todas_layers(layerid,todas)
{
	if (layerid.style.display=="none"){
      layerid.style.display="";
	}
	else {
	  layerid.style.display="none";
	}	
}