Fixing a bug in the modal sample that crops up in IE9.
Fixing a bug in the modal sample that crops up in IE9.

BlueSpire/Durandal,rwhepburn/Durandal,davismj/Durandal,mryellow/Durandal,mryellow/Durandal,rwhepburn/Durandal,rwhepburn/Durandal,mryellow/Durandal,Craga89/Durandal,BlueSpire/Durandal,Craga89/Durandal,rwhepburn/Durandal,Craga89/Durandal,BlueSpire/Durandal,Craga89/Durandal,davismj/Durandal,BlueSpire/Durandal,mryellow/Durandal,davismj/Durandal,davismj/Durandal