function SearchValidation(input)
{
    var requiredFields = new Array("searchword");

    var fieldNames = new Array("Palabras a buscar");

    var fieldCheck   = true;
    var fieldsNeeded = "\nEl siguiente campo no ha sido completado:\n\n\t";

    for(var fieldNum=0; fieldNum < requiredFields.length; fieldNum++) {
        if ((input.elements[requiredFields[fieldNum]].value == "") ||
            (input.elements[requiredFields[fieldNum]].value == " ")) {

            fieldsNeeded += fieldNames[fieldNum] + "\n\t";
            fieldCheck = false;
        }
    }

    
	if (fieldCheck == true)
	{
		
	}
	else {
		alert(fieldsNeeded);
		return false;
	}
	
}