function showDiv(obj){
    var foodId= document.getElementById("food");
	var techId= document.getElementById("tech");
	var sportId= document.getElementById("sport");
	var musicId= document.getElementById("music");
	var enterId= document.getElementById("enter");
	var homeId= document.getElementById("home");
	var artId= document.getElementById("art");

	var newfoodId= document.getElementById("newfood");
	var newtechId= document.getElementById("newtech");
	var newsportId= document.getElementById("newsport");
	var newmusicId= document.getElementById("newmusic");
	var newenterId= document.getElementById("newenter");
	var newhomeId= document.getElementById("newhome");
	var newartId= document.getElementById("newart");
	
	var contentfoodId= document.getElementById("foodcontent");
	var contenttechId= document.getElementById("techcontent");
	var contentsportId= document.getElementById("sportcontent");
	var contentmusicId= document.getElementById("musiccontent");
	var contententerId= document.getElementById("enterccontent");
	var contenthomeId= document.getElementById("homeccontent");
	var contentartId= document.getElementById("artccontent");
	 
	 contentfoodId.style.display = "none";
	 contenttechId.style.display = "none";
	 contentsportId.style.display = "none";
	 contentmusicId.style.display = "none";
	 contententerId.style.display = "none";
	 contenthomeId.style.display = "none";
	 contentartId.style.display = "none";

	 newfoodId.style.display = "";
	 newtechId.style.display = "none";
	 newsportId.style.display = "none";
	 newmusicId.style.display = "none";
	 newenterId.style.display = "none";
	 newhomeId.style.display = "none";
	 newartId.style.display = "none";

	 foodId.style.display = "none";
	 techId.style.display = "";
	 sportId.style.display = "";
	 musicId.style.display = "";
	 enterId.style.display = "";
	 homeId.style.display = "";
	 artId.style.display = "";
    if(obj==1){	 
	   newfoodId.style.display="none";
	   foodId.style.display = "";
	   contentfoodId.style.display = "";
	}
	else if(obj==2){
	   newtechId.style.display="";
	   techId.style.display="none";
	   contenttechId.style.display = "";
	
	}else if(obj==3){
	   newsportId.style.display="";
	   sportId.style.display="none";
	   contentsportId.style.display = "";
	}else if(obj==4){
	   newmusicId.style.display="";
	   musicId.style.display="none";
	  contentmusicId.style.display = "";
	}else if(obj==5){
	    newenterId.style.display="";
	    enterId.style.display="none";
	    contententerId.style.display = "";
	}else if(obj==6){
	 newhomeId.style.display="";
	   homeId.style.display="none";
	  contenthomeId.style.display = "";
	}
	else{
	   newartId.style.display="";
	   artId.style.display="none";
	   contentartId.style.display = "";
	}
  }