Performance Tuning: How to speed up JavaScript for IE by one line. (2008-01-15)
This code's make JavaScript speeding up to 5 times more normal speed for IE (Internet Explorer).
/*@cc_on _d=document;eval('var document=_d')@*/
When IE accesses the document object, the window object's internal method runs.
This running is very slow.
Ref. How to speed up JavaScript for IE by one line. - IT Senki (in Japanese)
Posted by NI-Lab. (@nilab)