I can't solve the wrong with a stop watch desiging

[Altera_Forum]

I was designing a stop watch this week,but get some troubles. 

There are four keys---reset,stop,minset(minute set),and secset(second set) in the watch.The reset and stop fuctions are right,but the minset and the secset won't make the minute or the second +1 successfully,and show some error numbers.I don't know why. This is my code:   module SECLOCK(clk,sclk,rundir,key); input clk,sclk;//clk--system clk&#65292;sclk---percentage second input rundir;//run direction input[3:0] key;// 4 keys reg[32:0] j;//the total percentage seconds,to generate min,sec,percentage second reg run;//stop mark reg keyclk; reg ssclk;   always @(posedge clk)//scan the keys' value&#65292;when key!=0&#65292;keyclk set high begin  if(key!=0) keyclk<=1;  else keyclk<=0; end     always @(sclk)//avoid the conflict between keyclk and ssclk begin  if(keyclk!=0) ssclk=0;  else ssclk=sclk; end   always @(posedge keyclk or posedge ssclk) begin   if(keyclk)  begin  case(key0)  4'b0001://reset  begin  j<=0;  run<=0;  end  4'b0010://stop  begin  run<=~run;  end  4'b0100://set second + 1  begin  j<=j+33'd100;  end  4'b1000://set min + 1  begin  j<=j+33'd6000;  end  endcase  end  else  begin  if(run==1 && rundir==1 ) //forward count  j<=j+1;  else if(run==1 && rundir==0 && j>0) //reward count  j<=j-1;  end    end   endmodule

[Altera_Forum]

I hope somebody can help solve it.Thanks.