I have this:

```
<p id="p1" style="line-height:normal">
    Lorem ipsum dolor sit amet, consectetur adipiscing elit, 
    sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
</p>

```

and I need to increment line-height one pixel.
How can I get absolute line-height when it set to 'normal'?

```
ar lh=$('#paraph').css('line-height');

```