$(document).ready(function(){
    // Slide effect
    var _parentSlide = 'div.slide-block';
    var _linkSlide = 'a.roll';
    var _slideBlock = 'div.body';
    var _openClassS = 'active';
	var _textOpenS = 'Open block';
    var _textCloseS = 'Close block';
    var _durationSlide = 400;
    $(_parentSlide).each(function(){
	if (!$(this).is('.'+_openClassS)) {
	    $(this).find(_slideBlock).css('display','none');
	}
    });
    $(_linkSlide,_parentSlide).click(function(){
		var _this = this;
		if ($(this).parents(_parentSlide).is('.'+_openClassS)) {
			$(this).parents(_parentSlide).find(_slideBlock).slideUp(_durationSlide, function(){
					$(_this).parents(_parentSlide).removeClass(_openClassS);
			});
			$(this).text(_textOpenS);
		} else {
			$(this).parents(_parentSlide).addClass(_openClassS);
			$(this).parents(_parentSlide).find(_slideBlock).slideDown(_durationSlide);
			$(this).text(_textCloseS);
		}
		return false;
    });
});