The Firefox & Chrome (Webkit) equivalents to the IE-specific zoom property are, respectively, -moz-transform and -webkit-transform.
sample code :
.zoomed-element {
zoom: 1.8;
-moz-transform: scale(1.8);
-webkit-transform: scale(1.8);
}
You'd have to be a bit more careful with Javascript (test for existence first), but here's how you'd manipulate them:
el.style.zoom = 1.9;
el.style.MozTransform = 'scale(1.9)';
el.style.WebkitTransform = 'scale(1.9)';
Read here
http://stackoverflow.com/questions/16836167/c-sharp-or-javascript-set-window-zoom-on-100[
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http://msdn.microsoft.com/en-us/library/ms531189%28v=vs.85%29.aspx[
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