Client Script Field Change Stuck in Loop

Hi Everyone,

I'm trying to use this field change trigger for the first time. I've run into a situation where it is performing the action I desire, however, I have a prompt inside the script that ends up popping up continuously.

function onFieldChange(type,name){          if(nlapiGetFieldValue('custbody_containerbillcount') != ''){              var totalBillAmount = nlapiGetFieldValue('usertotal');              var containerCount = nlapiGetFieldValue('custbody_containerbillcount');              var memoField = nlapiGetLineItemValue('expense','memo',1);              var x = confirm("Do you want to split bill amount of "+ totalBillAmount + " into "+ containerCount + " line items.");              if( x == true){                  for(var j = 1; j <= containerCount; j++){                      nlapiLogExecution('debug','Details','j = '+j);                      nlapiSelectLineItem('expense',j);                      nlapiSetCurrentLineItemValue('expense','account',487);                      nlapiSetCurrentLineItemValue('expense','amount',parseFloat(totalBillAmount)/parseInt(containerCount));                      nlapiSetCurrentLineItemValue('expense','memo',memoField);                      nlapiSetCurrentLineItemValue('expense','class',45);                      nlapiSetCurrentLineItemValue('expense','department',1);                      nlapiSetCurrentLineItemValue('expense','location',1)                      nlapiCommitLineItem('expense');                  }                  } else {                  alert('Action cancelled');              }              }  }