function valida(){
	if (document.formpesquisa.pesquisa.value.length < 1) { 
		alert('Introduza um texto para pesquisa!'); 
		return false;
	}else{  
		document.formpesquisa.action='pesquisa.asp?pesquisa='+document.formpesquisa.pesquisa.value;
		document.formpesquisa.submit();
		return true;
	}
		
}
function onKey(){
	if(window.event.keyCode==13){
		window.event.cancelBubble=true;
		valida();
	}
} 
function onKey2(e){
	if(e.keyCode==13){
		valida();
	}
} 



function valida_english(){
	if (document.formpesquisa.pesquisa.value.length < 1) { 
		alert('Enter a text to search'); 
		return false;
	}else{  
		document.formpesquisa.action='pesquisa.asp?pesquisa='+document.formpesquisa.pesquisa.value;
		document.formpesquisa.submit();
		return true;
	}
		
}
function onKey(){
	if(window.event.keyCode==13){
		window.event.cancelBubble=true;
		valida();
	}
} 
function onKey2(e){
	if(e.keyCode==13){
		valida();
	}
} 

function clearDefault(el) {
  if (el.defaultValue==el.value) el.value = "";
}


function putDefault(el){

if (el.value=="") el.value="Search";

}