var ns4 = (document.layers) ? true : false;
               var ie4 = (document.all && !document.getElementById) ? true : false;
               var ie5 = (document.getElementById) ? true : false;
               var ns6 = (!document.all && document.getElementById) ? true : false;
               
               var isNN = (navigator.appName.indexOf("Netscape")!=-1);                                                               
                                                                                                                                    
               function autoTab(input,len, e)                                                                                        
                 {                                                                                                                   
                  var keyCode = (isNN) ? e.which : e.keyCode;                                                                        
                  var filter = (isNN) ? [0,8,9] : [0,8,9,16,17,18,37,38,39,40,46];                                                   
                                                                                                                                    
                  if(input.value.length >= len && !containsElement(filter,keyCode))                                                  
                    {                                                                                                                
                     input.value = input.value.slice(0, len);                                                                        
                     input.form[(getIndex(input)+1) % input.form.length].focus();                                                    
                    }                                                                                                                
                                                                                                                                    
                  function containsElement(arr, ele)                                                                                 
                    {                                                                                                                
                     var found = false;                                                                                              
                     index = 0;                                                                                                      
                                                                                                                                    
                     while(!found && index < arr.length)                                                                             
                       if(arr[index] == ele)                                                                                         
                        {                                                                                                            
                         found = true;                                                                                               
                        }                                                                                                            
                        else                                                                                                         
                          {                                                                                                          
                           index++;                                                                                                  
                          }                                                                                                          
                     return found;                                                                                                   
                    }                                                                                                                
                                                                                                                                    
                  function getIndex(input)                                                                                           
                    {                                                                                                                
                     var index = -1;                                                                                                 
                     i = 0;                                                                                                          
                     found = false;                                                                                                  
                                                                                                                                    
                     while (i < input.form.length && index == -1)                                                                    
                       if (input.form[i] == input)                                                                                   
                         {                                                                                                           
                          index = i;                                                                                                 
                         }                                                                                                           
                         else                                                                                                        
                           {                                                                                                         
                            i++;                                                                                                     
                           }                                                                                                         
                     return index;                                                                                                   
                    }                                                                                                                
                  return true;                                                                                                       
                 }                                                                                                                   
               
               var fOverColor = "eeeeee";                                                                                            
               var fOutColor = "ffffff";                                                                                             
               var fFocusColor = "ffffcc";                                                                                           
               var fBlurColor = "ffffff";                                                                                            
                                                                                                                                    
               function fOver(which)                                                                                                 
                 {                                                                                                                   
	              if (which.style)                                                                                                      
                    {                                                                                                                
		             which.style.background = '#' + fOverColor;                                                    
	                }                                                                                                                   
                 }                                                                                                                   
                                                                                                                                    
               function fOut(which)                                                                                                  
                 {                                                                                                                   
	              if (which.style)                                                                                                      
                    {                                                                                                                
		             which.style.background = '#' + fOutColor;                                                     
	                }                                                                                                                   
                 }                                                                                                                   
                                                                                                                                    
               function highLight(which)                                                                                             
                 {                                                                                                                   
	              if (which.style)                                                                                                      
                    {                                                                                                                
  		             which.style.background = '#' + fFocusColor;                                                   
	                }                                                                                                                   
                 }                                                                                                                   
                                                                                                                                    
               function fieldBlur(which)                                                                                             
                 {                                                                                                                   
	              if (which.style)                                                                                                      
                    {                                                                                                                
		             which.style.background = '#' + fBlurColor;                                                    
	                }                                                                                                                   
                 }

               function handleEnter (field, event)
                 {
                  var keyCode = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;
                  
                  if (keyCode == 13)
                    {
                     var i;
                     for (i = 0; i < field.form.elements.length; i++)
                       if (field == field.form.elements[i])
                         break;
                         i = (i + 1) % field.form.elements.length;
                         field.form.elements[i].focus();
                         return false;
                    }
                    else
                      return true;
                 }