Hey! I only know now:
ONFOCUS = "this.blur ()"> Border = 0>
Among them, onfocus is something that sets the mouse focus event. This can be used, but it is recommended to use it for more browser to identify;
Border = 0 This is the key to remove the dotted frame (see someone onfocus = "this.blur ()" to eliminate the dotted box, but in the local test, just use this sentence cannot be eliminated)
Last summary:
1. Want to eliminate the dashed box, it is best to use the above two sentences, which is more insurance;
2, people's learning, such as the boat against the current, retreat.
