my users time is giving me the first two number of the time gut i can't
get the rest of my users time taken in (txtTimeTaken.value ) can any one 
help.


//-- users time taken on the task
var StartTime=0
var EndTime=0
var TimeTaken=0

function Start(StartTime){ 
// time on the taks
var nowDate = new Date();
var nowHour = nowDate.getHours();
var nowMinute = nowDate.getMinutes();
var nowSecond = nowDate.getSeconds();

//------  sets the start time for the task
    if (nowMinute < 10)
       {
         nowMinute = "0" + nowMinute;
       }
    if (nowSecond < 10)
       {
         nowSecond = "0" + nowSecond;
       }     
   
   txtUserStartTime.value=(nowHour + ":" + nowMinute + ":" + nowSecond)   
//----------------- 
   StartTime = parseFloat(txtUserStartTime.value)//*****
}

}
// Enter Button from the user input
function ChecktxtUserInput_onClick(EndTime,TimeTaken){

// user end time on the taks
var nowDate = new Date();
var nowHour = nowDate.getHours();
var nowMinute = nowDate.getMinutes();
var nowSecond = nowDate.getSeconds();

//------  sets the end time for the task
 if (txtWordCount.value=="6"){
    if (nowMinute < 10)
       {
         nowMinute = "0" + nowMinute;
      }
   if (nowSecond < 10)
       {        
       nowSecond = "0" + nowSecond;
      }     
   
  txtUserEndTime.value=(nowHour + ":" + nowMinute + ":" + nowSecond)   
  
   EndTime = parseFloat(txtUserEndTime.value)//*****
   
 

     //  if (txtUserEndTime.value!="" ||txtUserStartTime.value!=""){  
     //txtTimeTaken.value=((txtUserEndTime.value=nowHour + ":" + nowMinute 
+ ":" + nowSecond)-(txtUserStartTime.value=nowHour + ":" + nowMinute + ":" 
+ nowSecond))
   TimeTaken =parseFloat(EndTime-StartTime)
     //  } 
    txtTimeTaken.value =parseFloat(TimeTaken) 
  //-----------------	  
   } 
 // txtTimeTaken.value=( (txtUserEndTime.value=nowHour + ":" + nowMinute 
+ ":" + nowSecond)- (txtUserStartTime.value=nowHour + ":" + nowMinute 
+ ":" + nowSecond))
   	    
}