/***********************************************
 * Enable/Disable "Enter" key in Form script
 ***********************************************/
  function handleEnter (field, event, nCampo) 
  {

    var keyCode = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;

    if (keyCode == 13) 
    {

			var i;
			for (i = 0; i < field.form.elements.length; i++)
				if (field == field.form.elements[i])
					break;
			i = (i + 1) % field.form.elements.length;
            field.form.elements[i].focus();
			return false;
	 } 
	 else
	 return true;
   }



/*****************************************************************************/
  function ShowButton(x, id)
  {
    if (x == 1) 
	  { 
	     var obj = document.getElementById(id.id);
    	 obj.style.backgroundImage = 'url(img/button/buttonS.gif)';     
      } 
    else
      {
	     var obj=document.getElementById(id.id);
	     obj.style.backgroundImage = 'url(img/button/button.gif)';     
      }  	
  }

  function ShowNewButton(x, id)
  {
    if (x == 1) 
	  { 
	     var obj = document.getElementById(id.id);
    	 obj.style.backgroundImage = 'url(img/button/newbutton/NewbuttonT2.gif)';     
      } 
    else
      {
	     var obj=document.getElementById(id.id);
	     obj.style.backgroundImage = 'url(img/button/newbutton/NewbuttonT1.gif)';     
      }  	
  }

    /*****************************************************************************/
    function validaform(source, arguments)
    {
        //msgaux = 'Foram encontrados os seguintes erros:\n' 
       msgaux = 'Filtro de pesquisa n\u00e3\o especificado:\n'  
        erro=false;
        var x=0;

        if (document.form1.txt_filtro.value== "" )
        { 
            msgaux+='\n- Digite um titulo, autor ou assunto para pesquisar  !!!'; 
            erro=true;       
        }

        if (erro) 
        {
           alert(msgaux);    
           arguments.IsValid = false;  
        }
    }
    /*****************************************************************************/


  function limpacampos()
    {
        document.form1.txt_filtro.value = '';
      
    }