$(document).ready(function(){
		
		//Hide div w/id extra
	   $("#extra").css("display","none");

		// Add onclick handler to checkbox w/id checkme
	   $("#checkme").click(function(){
		
		// If checked
		if ($("#checkme").is(":checked"))
		{
			//show the hidden div
			$("#extra").show("fast");
		}
		else
		{	   
			//otherwise, hide it 
			$("#extra").hide("fast");
		}
	  });
	
		});
	$(document).ready(function(){
		
		//Hide div w/id extra
	   $("#extra").css("display","none");

		// Add onclick handler to checkbox w/id checkme
	   $("#checkme2").click(function(){
		
		// If checked
		if ($("#checkme2").is(":checked"))
		{
			//show the hidden div
			$("#extra").show("fast");
		}
		else
		{	   
			//otherwise, hide it 
			$("#extra").hide("fast");
		}
	  });
	
		});