function MM_preloadImages() { //v3.0
 var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
  var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
  if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
function MM_swapImgRestore() { //v3.0
 var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function MM_findObj(n, d) { //v4.01
 var p,i,x; if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
  d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
 if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
 for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
 if(!x && d.getElementById) x=d.getElementById(n); return x;
}
function MM_swapImage() { //v3.0
 var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
  if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
function estavacio(s)
{
	return ((s == null) || (String(s).length == 0 ))
}
function validarbuscar()
{
	//var txtSearchWords = document.getElementById('txtSearchWords');
    var txtSearchWords = $('txtSearchWords');
	//var frmbuscar = document.getElementById('buscador');
    var frmbuscar = $('buscador');
	//var selCriteria = document.getElementById('selCriteria');
    var selCriteria = $('selCriteria');
	//lbOk = false;
	if(txtSearchWords && txtSearchWords.value != 'Ingrese palabra clave')
	{
		if(! estavacio(txtSearchWords.value) && String(txtSearchWords.value).length > 0)
		{
			if(selCriteria && selCriteria.value != -1)
			{
				//lbOk = true;
				frmbuscar.submit();
			}
			else
			{
				selCriteria.focus();
				alert('Selecione un criterio de busqueda');
			}
		}
		else
		{
			txtSearchWords.focus();
			alert('Ingrese un palabra para la busqueda');
		}
	}
	else
	{
		txtSearchWords.focus();
		alert('Ingrese un palabra para la busqueda');
	}
	//return lbOk;
}

function cambiartema()
{
	//var frmbuscar = document.getElementById('buscador');
    var frmbuscar = $('buscador');
	//var selTema = document.getElementById('selTema');
    var selTema = $('selTema');
	//var txtSearchWords = document.getElementById('txtSearchWords');
    var txtSearchWords = $('txtSearchWords');
	//var selCriteria = document.getElementById('selCriteria');
    var selCriteria = $('selCriteria');
	if(selTema && selTema.value != -1)
	{
        // Modificado 2008-11-19 - Eiff Damian 
        // Redirecciono a la pagina tema.asp con el id del tema		
        /*
        txtSearchWords.value = '';
		selCriteria.value = -1;
		frmbuscar.submit();
        */
        try
        {
            document.location.href = "tema.asp?id=" + selTema.value;
        }
        catch(e)
        {
            txtSearchWords.value = '';
		    selCriteria.value = -1;
		    frmbuscar.submit();
        }        
	}
	else
	{
		selTema.focus();
		alert('Selecione un tema');
	}
}
function buscar(pTexto, pCriterio, pTema, pPagina)
{
	//var frmbuscar = document.getElementById('buscador');
    var frmbuscar = $('buscador');
	//var selTema = document.getElementById('selTema');
    var selTema = $('selTema');
	//var txtSearchWords = document.getElementById('txtSearchWords');
    var txtSearchWords = $('txtSearchWords');
	//var selCriteria = document.getElementById('selCriteria');
    var selCriteria = $('selCriteria');
	//var txtPagina = document.getElementById('txtPagina');
    var txtPagina = $('txtPagina');
	selTema.value = pTema;
	txtSearchWords.value = pTexto;
	selCriteria.value = pCriterio;
	txtPagina.value = pPagina;
	frmbuscar.submit();
}
function carrito(pta, pc, pid)
{
	//var f_ta = document.getElementById('ta');
    var f_ta = $('ta');
	//var f_c = document.getElementById('c');
    var f_c = $('c');
	//var f_id = document.getElementById('sid');
    var f_id = $('sid');
	//var frm_carrito = document.getElementById('frmcarrito');
    var frm_carrito = $('frmcarrito');
	f_ta.value = pta;
	f_c.value = pc;
	f_id.value = pid
	frm_carrito.submit();
}
function validarlogin()
{
	//var frm_login = document.getElementById('frmLogin');
    var frm_login = $('frmLogin');
	if($('txtemaillogin') && $('txtemaillogin').value !="" && $('txtcontrasenalogin') && $('txtcontrasenalogin').value !="" ) 
        frm_login.submit();
}
function validarsuscriocion()
{
	//var frm_suscripcion = document.getElementById('frmsuscripcion');
    var frm_suscripcion = $('frmsuscripcion');
	if($('txtmail22') && $('txtmail22').value != "") 
        frm_suscripcion.submit();
}
function validarkeypress(e)
{

	var keynum
	var keychar
	var numcheck
	if(window.event) // IE
	{
		keynum = e.keyCode;
	}
	else if(e.which) // Netscape/Firefox/Opera
	{
		keynum = e.which;
	}
	if (keynum == 13)
	{
		return checkbuscar();
	}
	else
	{
		return true;
	}
}
function checkbuscar()
{
	//var txtSearchWords = document.getElementById('txtSearchWords');
    var txtSearchWords = $('txtSearchWords');
	//var frmbuscar = document.getElementById('buscador');
    var frmbuscar = $('buscador');
	//var selCriteria = document.getElementById('selCriteria');
    var selCriteria = $('selCriteria');
	lbOk = false;
	if(txtSearchWords && txtSearchWords.value != 'Ingrese palabra clave')
	{
		if(! estavacio(txtSearchWords.value) && String(txtSearchWords.value).length > 0)
		{
			if(selCriteria.value != -1)
			{
				lbOk = true;
			}
			else
			{
				selCriteria.focus();
				alert('Selecione un criterio de busqueda');
			}
		}
		else
		{
			txtSearchWords.focus();
			alert('Ingrese un palabra para la busqueda');
		}
	}
	else
	{
		txtSearchWords.focus();
		alert('Ingrese un palabra para la busqueda');
	}
	return lbOk;
}