| 4447 | }; |
| 4448 | |
| 4449 | function siblingCheck( a, b ) { |
| 4450 | var cur = b && a, |
| 4451 | diff = cur && ( ~b.sourceIndex || MAX_NEGATIVE ) - ( ~a.sourceIndex || MAX_NEGATIVE ); |
| 4452 | |
| 4453 | // Use IE sourceIndex if available on both nodes |
| 4454 | if ( diff ) { |
| 4455 | return diff; |
| 4456 | } |
| 4457 | |
| 4458 | // Check if b follows a |
| 4459 | if ( cur ) { |
| 4460 | while ( (cur = cur.nextSibling) ) { |
| 4461 | if ( cur === b ) { |
| 4462 | return -1; |
| 4463 | } |
| 4464 | } |
| 4465 | } |
| 4466 | |
| 4467 | return a ? 1 : -1; |
| 4468 | } |
| 4469 | |
| 4470 | // Returns a function to use in pseudos for input types |
| 4471 | function createInputPseudo( type ) { |