Available from halfords (or similar) is a paint on element which is copper based and allows current to track over the broken part of the element. Purchase same, check with circuit tester exactly where breaks are, use masking tape to provid narrow channel and paint on....bingo....next time switched on will clear all window....providing you found all the breaks! :-D Tends not to be very permanent though so need to be careful with regard to cleaning and letting the dog back in
Strevs
April 2009