Simplest JS function to add/remove custom classname with carrying about another classes.
just to remember.
function toggleClassName(obj,sClassName,switcher){ if(switcher){ if(obj.className.indexOf(sClassName)==-1) obj.className=obj.className + ' ' + sClassName; }else{ var re = new RegExp(sClassName,'g'); obj.className=obj.className.replace(re,''); } }
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There is no brand new subject, really.
even 2 old articles (Vertical centering using CSS and CSS Vertical Centering again) from this blog.
2 problems:
1) Small height: if browser height is smaller than main container (for all browsers):
function adjustHeight(){
if(document.body.offsetHeight > 450){
document.body.style.height='100'+'%';
}else{
document.body.style.height='450px';
}
}
onload and onresize, of course.
2) IE7: this rule:
#ContainerDiv {position: relative; top: -50%;}
moves the #ContainerDiv above the top browser’s border for 50%. Reasonable, huh.
The cure:
#ContainerDiv {position: relative; top: expression(document.body.offsetHeight/2-this.offsetHeight/2);}
for custom IE7 CSS file using cond. comments:
<!--[if IE 7]>
<link rel="stylesheet" href="/css/ie7.css" type="text/css" media="screen" />
<![endif]-->
Don’t use em for font-size. Use %.
Usually 1em=100%.
Create a model:
<p style="font-size: 1em;">1 em Lorem Ipsum text</p>
<p style="font-size: 100%;">100% Lorem Ipsum text</p>
Then try to change text size (IE: View -> Text Size or Ctrl+Scroll) and you’ll get the difference.
But better just save the time and don’t use ems 😉
Disclamer: of course px is EVIL 🙂 We don’t talk about fixed font-sizes at all.
Disclamer #2. Of course Opera and FireFox are best browsers and they change not only font-size but everything. I am talking about damn IE.
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