function setCleanValue(e){
        try{var element = e.target          }catch(er){};
        try{var element = event.srcElement  }catch(er){};
        
        if(element.value == 'Digite aqui o termo da pesquisa.') element.value = '';        
    }

    function setDefaultValue(e){
        try{var element = e.target          }catch(er){};
        try{var element = event.srcElement  }catch(er){};
        
        if(element.value.length == 0) element.value = 'Digite aqui o termo da pesquisa.';
    }

    window.onload = function(){ 
        document.getElementById('busca').onfocus    = setCleanValue;
        document.getElementById('busca').onblur     = setDefaultValue;
    }
	function Publicidade(){
		window.open('/_anuncio/anuncio.htm','_blank','toolbar=no,location=no,directories=no,status=no,menubar=no,max=no,scrollbars=no,resizable=no,width=300,height=250,top=40,left=500');
	}