901c901
< 					setClass(document.ltargetform.anchor_class.value);
---
> 					if (document.ltargetform.anchor_class) setClass(document.ltargetform.anchor_class.value);
908c908
< 					setClass(document.ltargetform.anchor_class.value);
---
> 					if (document.ltargetform.anchor_class) setClass(document.ltargetform.anchor_class.value);
914c914
< 					setClass(document.ltargetform.anchor_class.value);
---
> 					if (document.ltargetform.anchor_class) setClass(document.ltargetform.anchor_class.value);
920c920
< 					setClass(document.ltargetform.anchor_class.value);
---
> 					if (document.ltargetform.anchor_class) setClass(document.ltargetform.anchor_class.value);