jquery - How to mask out a section of a div to see behind it? -


i'm looking way mask out part of div behind visible.

looking @ example, replace black circle sort of mask, slides down text being revealed (or background image) can seen behind it.

jsfiddle

jquery(document).ready(function() {     $('.img').click(function() {         $('.mid').slidetoggle('slow');     }); });

if want use css, there creative solution problem. seperate horizontal part "black hole" others 3 parts: left of circular hole, hole, , right part. in hole part put div no background , border suitable border radius. fixed width , height measurements, further seperation should no trouble.

best example how whale : http://www.subcide.com/experiments/fail-whale/

this applicable chomre 4.0+, ie 9+, firefox 3+, safari 3.1 , 5 opera 10.5 make sure include corresponding prefixes (-moz- , -webkit-)


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