This is when you are forced into developing your client's website to be compatible with IE6 (Internet Explorer 6), because a large percentage of their customers wear "special helmets" when they are allowed to go outdoors.
Recommendation: Blunt force trauma to be applied to your client, the nearest lackey, or yourself... actually destroying anything nearby will probably make you feel better.
I tied someone to railroad tracks cuz I had the browser rage!
She ripped out their hearth Temple of Doom style cuz she had the browser rage!
Mortal Kombat finishing moves would be like a pat on the back compared to the browser rage.
You made good use of your time at work curing that browser rage.