javascript - jquery change opacity and height on scroll -


i'm trying write little js. navigation has gradient set background. want background change in height , gradient flat color 0.85 opacity (animated) when scroll down amount.

here's js code

$(window).scroll(function(){ if  ($(window).scrolltop() >= 600){      $('#navigation').css({height: '92px'}); } else {      $('#navigation').css({height: '142px'});     } });

here's css

#navigation {  height: 142px; width: 1350px; position: fixed; z-index: 2000;  background: -moz-linear-gradient(top,  rgba(0,0,0,0.75) 0%, rgba(0,0,0,0) 100%); /* ff3.6+ */ background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(0,0,0,0.75)), color-stop(100%,rgba(0,0,0,0))); /* chrome,safari4+ */ background: -webkit-linear-gradient(top,  rgba(0,0,0,0.75) 0%,rgba(0,0,0,0) 100%); /* chrome10+,safari5.1+ */ background: -o-linear-gradient(top,  rgba(0,0,0,0.75) 0%,rgba(0,0,0,0) 100%); /* opera 11.10+ */ background: -ms-linear-gradient(top,  rgba(0,0,0,0.75) 0%,rgba(0,0,0,0) 100%); /* ie10+ */ background: linear-gradient(to bottom,  rgba(0,0,0,0.75) 0%,rgba(0,0,0,0) 100%); /* w3c */ filter: progid:dximagetransform.microsoft.gradient( startcolorstr='#bf000000', endcolorstr='#00000000',gradienttype=0 ); /* ie6-9 */

}

hope can me

your code !!

just create 2 separate class , replace $('#navigation').css({height: '92px'}); $('#navigation').addclass("flatcolored"); , $('#navigation').removeclass("flatcolored"); in 'else'.

instead of having #navigation{ ...} in css, use .gradientcolored{...} .flatcolored{...}

and in html : <div id="navigation" class="gradientcolored">...</div>

override background properties in 'flatcolored class.

tested on chrome, based on code. works fine !


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