;(function( $ ){

 var $scrollTo = $.scrollTo = function( target, duration, settings ){
 $scrollTo.window().scrollTo( target, duration, settings );
 };

 $scrollTo.defaults = {
 axis:'y',
 duration:1
 };

 //returns the element that needs to be animated to scroll the window
 $scrollTo.window = function(){
 return $( $.browser.safari ? 'body' : 'html' );
 };

 $.fn.scrollTo = function( target, duration, settings ){
 if( typeof duration == 'object' ){
 settings = duration;
 duration = 0;
 }
 settings = $.extend( {}, $scrollTo.defaults, settings );
 duration = duration || settings.speed || settings.duration;//speed is still recognized for backwards compatibility
 settings.queue = settings.queue && settings.axis.length > 1;//make sure the settings are given right
 if( settings.queue )
 duration /= 2;//let's keep the overall speed, the same.
 settings.offset = both( settings.offset );
 settings.over = both( settings.over );

 return this.each(function(){
 var elem = this, $elem = $(elem),
 t = target, toff, attr = {},
 win = $elem.is('html,body');
 switch( typeof t ){
 case 'number'://will pass the regex
 case 'string':
 if( /^([+-]=)?\d+(px)?$/.test(t) ){
 t = both( t );
 break;//we are done
 }
 t = $(t,this);// relative selector, no break!
 case 'object':
 if( t.is || t.style )//DOM/jQuery
 toff = (t = $(t)).offset();//get the real position of the target
 }
 $.each( settings.axis.split(''), function( i, axis ){
 var Pos = axis == 'x' ? 'Left' : 'Top',
 pos = Pos.toLowerCase(),
 key = 'scroll' + Pos,
 act = elem[key],
 Dim = axis == 'x' ? 'Width' : 'Height',
 dim = Dim.toLowerCase();

 if( toff ){//jQuery/DOM
 attr[key] = toff[pos] + ( win ? 0 : act - $elem.offset()[pos] );

 if( settings.margin ){//if it's a dom element, reduce the margin
 attr[key] -= parseInt(t.css('margin'+Pos)) || 0;
 attr[key] -= parseInt(t.css('border'+Pos+'Width')) || 0;
 }

 attr[key] += settings.offset[pos] || 0;//add/deduct the offset

 if( settings.over[pos] )//scroll to a fraction of its width/height
 attr[key] += t[dim]() * settings.over[pos];
 }else
 attr[key] = t[pos];//remove the unnecesary 'px'

 if( /^\d+$/.test(attr[key]) )//number or 'number'
 attr[key] = attr[key] <= 0 ? 0 : Math.min( attr[key], max(Dim) );//check the limits

 if( !i && settings.queue ){//queueing each axis is required
 if( act != attr[key] )//don't waste time animating, if there's no need.
 animate( settings.onAfterFirst );//intermediate animation
 delete attr[key];//don't animate this axis again in the next iteration.
 }
 });
 animate( settings.onAfter );

 function animate( callback ){
 $elem.animate( attr, duration, settings.easing, callback && function(){
 callback.call(this, target);
 });
 };
 function max( Dim ){
 var el = win ? $.browser.opera ? document.body : document.documentElement : elem;
 return el['scroll'+Dim] - el['client'+Dim];
 };
 });
 };

 function both( val ){
 return typeof val == 'object' ? val : { top:val, left:val };
 };

})( jQuery );