function solonumeros2(evt)
{
		
     var keyPressed = (evt.which) ? evt.which : evt.keyCode
     return !(keyPressed > 31 && (keyPressed < 48 || keyPressed > 57));
}


function solonumeros(evt)
{
		
     var keyPressed = (evt.which) ? evt.which : evt.keyCode
	
		return !(keyPressed > 40 && (keyPressed < 48 || keyPressed > 57));
}


function buscar()
{

	tipo=document.getElementById("tipo_busqueda").value;
	valor=document.getElementById("cadena_busqueda").value;
	
	if(tipo!="")
	{
		
		if(tipo=="0")
		{
			
			
			if(valor!="" && valor.length>0)
			{
				document.getElementById("form_busqueda").submit();
			}
			
			
			
		}
		else
		{
			
				if(valor!=""  && valor.length>0)
				{
					document.getElementById("form_busqueda").submit();
				}
			
			
		}


	}
	


}

function no_imagen_principal(esto){
	esto.src = "http://elektradomesticos.es/public/frontend/img/no_image_principal.jpg";
}  


function no_imagen(esto){
	esto.src = "http://elektradomesticos.es/public/frontend/img/no_image.jpg";
}  

function no_thumb(esto){
esto.src = "http://elektradomesticos.es/public/frontend/img/no_image_p.jpg";
}  

function nif(dni) {
  numero = dni.substr(0,dni.length-1);
  let = dni.substr(dni.length-1,1);
  numero = numero % 23;
  var valor;
  valor=0;
  letra='TRWAGMYFPDXBNJZSQVHLCKET';
  letra=letra.substring(numero,numero+1);
  if (letra!=let)
  {
	  valor=-1

  }
	return valor;  
}

function isEmailAddress(email)
{
	var s = email;
	var filter=/^[A-Za-z][A-Za-z0-9_]*@[A-Za-z0-9_]+\.[A-Za-z0-9_.]+[A-za-z]$/;
	if (s.length == 0 ) return true;
	if (filter.test(s))
	return 0;
	else
	return -1;

}


function ltrim(str) { 
	for(var k = 0; k < str.length && isWhitespace(str.charAt(k)); k++);
	return str.substring(k, str.length);
}
function rtrim(str) {
	for(var j=str.length-1; j>=0 && isWhitespace(str.charAt(j)) ; j--) ;
	return str.substring(0,j+1);
}
function isWhitespace(charToCheck) {
	var whitespaceChars = " \t\n\r\f";
	return (whitespaceChars.indexOf(charToCheck) != -1);
}