var BasicValidate = 
            	{
            		//////////////////////////////////////////////////
            		Form: function(form, validate_event, required_class, error_class)
            		{
            			var form_id = (form.id != undefined) ? form.id : form;
            			
            			var field_errors 	= 0;
                		var required_class  = (required_class != undefined) ? required_class : 'mandatoryfield';
                		var error_class 	= (error_class != undefined) ? error_class : 'errorfield';
            
            			//---[ get fields ]---
            			var inputs = $(form_id).getInputs();
            
            			for( i=0; i < inputs.length; i++ )
            			{
            				var field_name = inputs[i].name;
            
            				if( $(field_name).hasClassName(required_class) )
            				{
            					if( $(field_name).value.blank() )
            					{
            						BasicValidate.SetError(field_name, true, error_class);
            
            						field_errors++;
            					}
            					else if( field_name.indexOf("email") > -1 )
            					{
            						BasicValidate.SetError(field_name, false);
        			
                        			if( !BasicValidate.IsValidEmail( $(field_name).value ) )
                        			{
                        				BasicValidate.SetError(field_name);
                        			
                        				field_errors++;	
                        			}
            					}
            					else
            					{
            						BasicValidate.SetError(field_name, false, error_class);
            					}
            				}
            			}

            			if( validate_event != null )
            				field_errors += validate_event(this);  
                		
            
            			if( field_errors == 0 )
            				return true;
            			else
            				return false;
            		},
            		//////////////////////////////////////////////////
            		SetError: function(field_name, error_on, error_class )
            		{
            			var error_class = (error_class != undefined ) ? error_class : 'errorfield';
            		
            			if( error_on == undefined || error_on == true )
            				Element.addClassName(field_name, error_class);
            			else
            				Element.removeClassName(field_name, error_class);
            		},            		
            		IsValidEmail: function(email)
            		{
            			var pattern = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
            
            			return pattern.test(email);
            		},
            		SetCheckboxes: function(form_id)
            		{
                		if( $(form_id) )
                		{
    						//---[ set method as post ]---
    						$(form_id).setAttribute('method', 'post');
    						
    						//---[ set action /emailform ]---
    						//$(form_id).setAttribute('action', '/forms');
     
     						//---[ create checkbox index ]---
     						var inputs = $(form_id).getInputs('checkbox');
                			var cb_index = '';
                
                			for( i=0; i < inputs.length; i++ )
                			{
                				cb_index += inputs[i].name;
                			
                				if( i < inputs.length -1 )
                					cb_index += ',';	
                			}
    
     						//---[ add checkbox index to form ]---
     						if( !cb_index.blank() )
     						{
                            	var cbs = new Element('input', { 'type': 'hidden', 'name': 'checkbox_index', 'id': 'checkbox_index', 'value': cb_index });
                		
                				$(form_id).insert(cbs);
            				}
        				}    
            		}
            	};