$(document).ready(function(){
	var sections = $("#panel-buttons li");
	var concept = $("#div-concept");
	var overview = $("#div-overview");
	var lipsum1 = $("#div-lipsum1");
	var lipsum2 = $("#div-lipsum2");
	var lipsum3 = $("#div-lipsum3");
   	var concepton = $(".concept-on");
	var overviewon = $(".overview-on");
	var lipsum1on = $(".lipsum1-on");
	var lipsum2on = $(".lipsum2-on");
	var lipsum3on = $(".lipsum3-on");
    var slidez = $(".ppt ul");
   
	sections.click(function(){

		switch(this.id){

           	case "overview":
                concepton.show();
                slidez.hide();
                overviewon.hide();
                lipsum1on.hide();
                lipsum2on.hide();
                lipsum3on.hide();
                concept.hide();
                overview.show();
                lipsum1.hide();
                lipsum2.hide();
                lipsum3.hide();
				break;

            case "concept":
                overviewon.show();
                concepton.hide();
                lipsum1on.hide();
                lipsum2on.hide();
                lipsum3on.hide();
                concept.show();
                slidez.show();
                overview.hide();
                lipsum1.hide();
                lipsum2.hide();
                lipsum3.hide();
				break;

			case "lipsum1":
                lipsum1on.show();
                slidez.hide();
                concepton.hide();
                overviewon.hide();
                lipsum2on.hide();
                lipsum3on.hide();
                concept.hide();
                overview.hide();
                lipsum1.show();
                lipsum2.hide();
                lipsum3.hide();
             	break;
			case "lipsum2":
                lipsum2on.show();
                slidez.hide();
                concepton.hide();
                overviewon.hide();
                lipsum1on.hide();
                lipsum3on.hide();
                concept.hide();
                overview.hide();
                lipsum1.hide();
                lipsum2.show();
                lipsum3.hide();
 				break;
			case "lipsum3":
                lipsum3on.show();
                slidez.hide();
                concepton.hide();
                overviewon.hide();
                lipsum1on.hide();
                lipsum2on.hide();
                concept.hide();
                overview.hide();
                lipsum1.hide();
                lipsum2.hide();
                lipsum3.show();
				break;

                
		}
	});
});