diff --git a/intl/lwbrk/src/nsJISx4501LineBreaker.cpp b/intl/lwbrk/src/nsJISx4501LineBreaker.cpp
index 88d999d07ff2..34cc0228f3ac 100644
--- a/intl/lwbrk/src/nsJISx4501LineBreaker.cpp
+++ b/intl/lwbrk/src/nsJISx4501LineBreaker.cpp
@@ -204,11 +204,6 @@ static PRUint16 gPair[MAX_CLASSES] = {
 
 #define IS_HALFWIDTH_IN_JISx4501_CLASS3(u) ((0xff66 <= (u)) && ((u) <= 0xff70))
 
-#define IS_CJK_CHAR(u) ((0x1100 <= (u) && (u) <= 0x11ff) || \
-	                     (0x2e80 <= (u) && (u) <= 0xd7ff) || \
-								(0xf900 <= (u) && (u) <= 0xfaff) )
-
-#define IS_SPACE(u) ((u) == 0x0020 || (u) == 0x0009)
 
 PRInt8 nsJISx4501LineBreaker::GetClass(PRUnichar u)
 {
@@ -361,32 +356,6 @@ NS_IMETHODIMP nsJISx4501LineBreaker::BreakInBetween(
      return NS_OK;
   }
 
-  //search for CJK characters until a space is found. 
-  //if CJK char is found before space, use 4051, otherwise western
-  PRInt32 cur;
-
-  for (cur= aTextLen1-1; cur>=0; cur--)
-  {
-	  if (IS_SPACE(aText1[cur]))
-		  break;
-	  if (IS_CJK_CHAR(aText1[cur]))
-		  goto ROUTE_CJK_BETWEEN;
-  }
-
-  for (cur= 0; cur < (PRInt32)aTextLen2; cur++)
-  {
-	  if (IS_SPACE(aText2[cur]))
-		  break;
-	  if (IS_CJK_CHAR(aText2[cur]))
-		  goto ROUTE_CJK_BETWEEN;
-  }
-
-  //now apply western rule.
-  *oCanBreak = (IS_SPACE(aText1[aTextLen1-1]) || IS_SPACE(aText2[0]));
-  return NS_OK;
-
-ROUTE_CJK_BETWEEN:
-
   PRInt8 c1, c2;
   if(NEED_CONTEXTUAL_ANALYSIS(aText1[aTextLen1-1]))
     c1 = this->ContextualAnalysis((aTextLen1>1)?aText1[aTextLen1-2]:0,
@@ -440,31 +409,8 @@ NS_IMETHODIMP nsJISx4501LineBreaker::Next(
      return NS_OK;
   }
 
-  //forward check for CJK characters until a space is found. 
-  //if CJK char is found before space, use 4051, otherwise western
-  PRUint32 cur = aPos;
-
-  for (cur= aPos; cur<(PRInt32)aLen; cur++)
-  {
-	  if (IS_SPACE(aText[cur]))
-	  {
-		  //cur++;
-		  //while(IS_SPACE(aText[cur])) cur++;
-		  //cur--;
-        *oNext = cur;
-        *oNeedMoreText = PR_FALSE;
-        return NS_OK;
-	  }
-	  if (IS_CJK_CHAR(aText[cur]))
-		  goto ROUTE_CJK_NEXT;
-  }
-  *oNext = aLen;
-  *oNeedMoreText = PR_TRUE;
-  return NS_OK;
-
-ROUTE_CJK_NEXT:
   PRInt8 c1, c2;
-  cur = aPos;
+  PRUint32 cur = aPos;
   if(NEED_CONTEXTUAL_ANALYSIS(aText[cur]))
   {
     c1 = this->ContextualAnalysis((cur>0)?aText[cur-1]:0,
@@ -525,34 +471,8 @@ NS_IMETHODIMP nsJISx4501LineBreaker::Prev(
      return NS_OK;
   }
 
-  //backward check for CJK characters until a space is found. 
-  //if CJK char is found before space, use 4051, otherwise western
-  PRUint32 cur;
-
-  for (cur= aPos+1; cur>0; )
-  {
-	  cur--;
-	  if (IS_SPACE(aText[cur]))
-	  {
-		  //cur++;
-		  //while(IS_SPACE(aText[cur])) cur++;
-		  //cur--;
-		  cur++;
-        *oPrev = cur;
-        *oNeedMoreText = PR_FALSE;
-        return NS_OK;
-	  }
-	  if (IS_CJK_CHAR(aText[cur]))
-		  goto ROUTE_CJK_PREV;
-  }
-
-  *oPrev = 0;
-  *oNeedMoreText = PR_TRUE;
-  return NS_OK;
-
-ROUTE_CJK_PREV:
-  cur = aPos;
   PRInt8 c1, c2;
+  PRUint32 cur = aPos;
   if(NEED_CONTEXTUAL_ANALYSIS(aText[cur-1]))
   {
     c2 = this->ContextualAnalysis(((cur-1)>0)?aText[cur-2]:0,