[tenshi]

var FThread= new function(){

Version: 5
Description: 'creates a wrapper for function that allows you to not be afraid of exceptions in'
License: 'public domain'
 
Implementation:

var FThread= function( proc ){
    var thread= function( ){
        var res, self= this, args= arguments
        var starter= new XMLHttpRequest
        starter.onreadystatechange= starter.onabort= function( ev ){
        	starter.onreadystatechange= starter.onabort= null
		    res= thread.proc.apply( self, args )
		}
        //console.dir( starter )
        starter.open( 'get', '#', true )
        starter.send( null )
        starter.abort()
        return res
    }
    thread.proc= proc
    return thread
}
 
//Export: return FThread

Usage:

var inverse= FThread(function( a ){
    if( a === -1 ) (void 0)()
    if( a === 0 ) throw Error( 'division by zero' )
    return 1/a
})
alert([ inverse( -1 ), inverse( 0 ), inverse( 1 ) ])
// alerts ",,1" and two exceptions in console log

}