$(document).ready(function(){
			$("#numberofAnswers").val(2);
	        //only allow 1 category checkbox checked
            var i=0;
            $("input[@name='categories[]']").click(function(){
            	       var p=$("input[@name='categories[]']:checked").size();
            	       if(p>1)
            	       {
            	       		this.checked=false;
            	       }
            });
            //add answer text-box
            $("#addAnswer").click(function(){
            			var answersNumber=$("#numberofAnswers").val();
            			var total=parseInt(answersNumber)+1;
            			if(total==6)
            			{
            				return false;
            			}
            			else
            			{
            			$("#numberofAnswers").val(total);
            			var i=total;
            			var addP="<div class='addImage'>Add an image to your answer</div>";
            			
            			$("#newrow").clone().appendTo("#answers").show();            			            					
            			$("#answers p:last input[@type=text]").val('');
            			$("#answers p:last").attr('id','answer_'+i);
            			$("#answers p:last label").text('Choice '+i+' ');
            			$("#answers p:last input[@type=text]").attr('name','answer_'+i);
            			$("#answers p:last input[@type=radio][@value=nopic]").attr('checked','true');
            			$("#answers p:last span input[@value=local]").attr('name','imagesource_'+i);
            			$("#answers p:last span input[@value=nopic]").attr('name','imagesource_'+i);
            			$("#answers p:last span input[@value=external]").attr('name','imagesource_'+i);
            			$("#answers p:last span input[@type=file]").attr('name','file_'+i).hide();
            			$("#answers p:last span .image_links").attr('name','link_'+i).hide();
            			$("#answers p:last span").prepend(addP);
            			
            			var u=$("#answers p:last .imagesource");
            			u.click(function(){
            				displayUpload(u);
            			});
            			return false;
            			}
            });
            $("#removeAnswer").click(function(){            
            	        var answersNumber=$("#numberofAnswers").val();
            		var total=parseInt(answersNumber)-1;
            			if(total==1)
            			{
            				return false;
            			}
            			else
            			{
	            			$("#numberofAnswers").val(total);
        	    			$("#answers p:last").remove();
            				return false;
            			}
            });
            //do things when choose upload or external link radio button 
            $(".image_links").hide(); $(".image_files").hide();
            $(".imagesource").click(function(){
            	      var p=$(this).val();
            	      var file=$(this).parent("span").children(".image_files");
            	      var link=$(this).parent("span").children(".image_links");
            	      if(p=='local')
            	      {
            	      	file.show();      	      	
            	      	link.hide();
            	      	link.val('');
            	      }
            	      if(p=='external')
            	      {
            	      	link.show();
            	      	file.hide();
            	      	file.val('');
            	      }
            	      if(p=='nopic')
            	      {
            	      	link.hide();
            	      	file.hide();
            	      	file.val('');
            	      }
            	     
            });
           $("#question_upload").hide();
           $("#question_link").hide();
           $("input[@name=image_choice]").click(function(){
           			if($(this).val()=='local')
           			{
           				$("#question_upload").show();
          			    $("#question_link").hide();
          			    $("#question_link").val('');
           			}
           			if($(this).val()=='external')
           			{
           				$("#question_upload").hide();
          			    $("#question_link").show();
          			    $("#question_upload").val('');
           			} 
           }); 
         $("input[name=copyMyPoll]").click(function(){
         	var text=$("#mypolllink").text();
         	$.copy(text);
         });
});
function displayUpload(a)
{
	a.click(function(){
            	      var p=$(this).val();
            	      var file=$(this).parent("span").children(".image_files");
            	      var link=$(this).parent("span").children(".image_links");
            	      if(p=='local')
            	      {
            	      	file.show();
            	      	link.hide();
            	      	$(this).attr('checked','true');
            	      	$(this).siblings('input[@type=radio]').attr('checked','');
            	      }
            	      if(p=='external')
            	      {
            	      	link.show();
            	      	file.hide();
            	      	$(this).attr('checked','true');
            	      	$(this).siblings('input[@type=radio]').attr('checked','');
            	      } 
            	      if(p=='nopic')
            	      {
            	      	link.hide();
            	      	file.hide();
            	      	$(this).attr('checked','true');
            	      	$(this).siblings('input[@type=radio]').attr('checked','');
            	      }          	     
            });
    return false;
}