text: 
  function scroll_to_class(element_class, removed_height) {
  	var scroll_to = $(element_class).offset().top - removed_height;
  	if($(window).scrollTop() != scroll_to) {
  		$('html, body').stop().animate({scrollTop: scroll_to}, 0);
  	}
  }
  
  function bar_progress(progress_line_object, direction) {
  	var number_of_steps = progress_line_object.data('number-of-steps');
  	var now_value = progress_line_object.data('now-value');
  	var new_value = 0;
  	if(direction == 'right') {
  		new_value = now_value + ( 100 / number_of_steps );
  	}
  	else if(direction == 'left') {
  		new_value = now_value - ( 100 / number_of_steps );
  	}
  	progress_line_object.attr('style', 'width: ' + new_value + '%;').data('now-value', new_value);
  }
  
  jQuery(document).ready(function() {
  	
      /*
          Fullscreen background
      */
      $.backstretch("asset/img/BG.png");
      
      $('#top-navbar-1').on('shown.bs.collapse', function(){
      	$.backstretch("resize");
      });
      $('#top-navbar-1').on('hidden.bs.collapse', function(){
      	$.backstretch("resize");
      });
      
      /*
          Form
      */
      $('.f1 fieldset:first').fadeIn('slow');
      
      $('.f1 input[type="text"], .f1 input[type="password"], .f1 textarea').on('focus', function() {
      	$(this).removeClass('input-error');
      });
      
      // next step
      $('.f1 .btn-next').on('click', function() {
      	var parent_fieldset = $(this).parents('fieldset');
      	var next_step = true;
      	// navigation steps / progress steps
      	var current_active_step = $(this).parents('.f1').find('.f1-step.active');
      	var progress_line = $(this).parents('.f1').find('.f1-progress-line');
      	
      	// fields validation
      	parent_fieldset.find('input[type="text"], input[type="password"], textarea').each(function() {
      		if( $(this).val() == "" ) {
      			$(this).addClass('input-error');
      			next_step = false;
      		}
      		else {
      			$(this).removeClass('input-error');
      		}
      	});
      	// fields validation
      	
      	if( next_step ) {
      		parent_fieldset.fadeOut(400, function() {
      			// change icons
      			current_active_step.removeClass('active').addClass('activated').next().addClass('active');
      			// progress bar
      			bar_progress(progress_line, 'right');
      			// show next step
  	    		$(this).next().fadeIn();
  	    		// scroll window to beginning of the form
      			scroll_to_class( $('.f1'), 20 );
  	    	});
      	}
      	
      });
      
      // previous step
      $('.f1 .btn-previous').on('click', function() {
      	// navigation steps / progress steps
      	var current_active_step = $(this).parents('.f1').find('.f1-step.active');
      	var progress_line = $(this).parents('.f1').find('.f1-progress-line');
      	
      	$(this).parents('fieldset').fadeOut(400, function() {
      		// change icons
      		current_active_step.removeClass('active').prev().removeClass('activated').addClass('active');
      		// progress bar
      		bar_progress(progress_line, 'left');
      		// show previous step
      		$(this).prev().fadeIn();
      		// scroll window to beginning of the form
  			scroll_to_class( $('.f1'), 20 );
      	});
      });
      
      // submit
      $('.f1').on('submit', function(e) {
      	
      	// fields validation
      	$(this).find('input[type="text"], input[type="password"], textarea').each(function() {
      		if( $(this).val() == "" ) {
      			e.preventDefault();
      			$(this).addClass('input-error');
      		}
      		else {
      			$(this).removeClass('input-error');
      		}
      	});
      	// fields validation
      	
      });
      
      
  });
  