Form validation using java script fail in IE-7 but working fine in from IE-8 onwards

Form validation using java script fail in IE-7 but working fine in from
IE-8 onwards

References

Reference NO 1

http://stackoverflow.com/questions/13650405/form-validation-using-java-script-fail-in-ie-7-but-working-fine-in-from-ie-8-onw

Reference NO 2

http://stackoverflow.com/questions/359895/what-are-the-most-likely-causes-of-javascript-errors-in-ie8

Reference NO 3

http://www.solveerrors.com/forums/infragistics-webgrid-not-working-in-ie-8-282994.asp

Reference NO 4

http://social.msdn.microsoft.com/Forums/ie/en-US/772e4b07-29e1-4909-b77f-f61c503f9579/action?threadDisplayName=ie8-javascript-changes

Reference NO 5

http://forumarray.com/ajax-popup-extender-not-working-in-ie-7-and-ie-8-browsers-488377

Reference NO 6

http://datatables.net/forums/discussion/4739/beating-the-ie-dead-horse/p1

Reference NO 7

http://www.solvethiserror.com/html/infragistics-webgrid-not-working-in-ie-8-solution-16-282994.asp

Reference NO 8

#EANF#