(function($){$.extend($.fn,{getCss:function(key){var v=parseInt(this.css(key));if(isNaN(v))return false;return v;}});$.fn.Drags=function(opts){var ps=$.extend({zIndex:20,opacity:.7,handler:null,onMove:function(){},onDrop:function(){},range:''},opts);var dragndrop={drag:function(e){var dragData=e.data.dragData;var r=dragData.newRange;var dx=dragData.left+e.pageX-dragData.offLeft;var dy=dragData.top+e.pageY-dragData.offTop;if(typeof r=='object')dragData.target.css({left:dx<r[3]?r[3]:(dx>r[1]?r[1]:dx),top:dy<r[0]?r[0]:(dy>r[2]?r[2]:dy)});else if(r=='')dragData.target.css({left:dx,top:dy});dragData.target.css({'opacity':ps.opacity,'cursor':'move'});dragData.onMove(e);},drop:function(e){var dragData=e.data.dragData;dragData.target.css(dragData.oldCss);dragData.handler.css('cursor',dragData.oldCss.cursor);dragData.onDrop(e);$(document).unbind('mousemove',dragndrop.drag).unbind('mouseup',dragndrop.drop);}};return this.each(function(){var me=this;var handler=null;if(typeof ps.handler=='undefined'||ps.handler==null)handler=$(me);else handler=(typeof ps.handler=='string'?$(ps.handler,this):ps.handler);handler.bind('mousedown',{e:me},function(s){var target=$(s.data.e);var oldCss={};if(target.css('position')!='absolute'&&target.css('position')!='fixed'){try{target.position(oldCss);}catch(ex){}target.css('position','absolute');}oldCss.cursor=target.css('cursor')||'default';oldCss.opacity=target.getCss('opacity')||1;var newRange=[];if(ps.range=='window'){newRange=[target.css('position')=='fixed'?0:$(window).scrollTop(),target.css('position')=='fixed'?$(window).width()-target.outerWidth():$(window).scrollLeft()+$(window).width()-target.outerWidth(),target.css('position')=='fixed'?$(window).height()-target.outerHeight():$(window).scrollTop()+$(window).height()-target.outerHeight(),target.css('position')=='fixed'?0:$(window).scrollLeft()];}else{newRange=[ps.range[0],ps.range[1]-target.outerWidth(),ps.range[2]-target.outerWidth(),ps.range[3]];}var dragData={left:oldCss.left||target.getCss('left')||0,top:oldCss.top||target.getCss('top')||0,offLeft:target.css('position')=='fixed'?s.pageX-$(window).scrollLeft():s.pageX,offTop:target.css('position')=='fixed'?s.pageY-$(window).scrollLeft():s.pageY,oldCss:oldCss,onMove:ps.onMove,onDrop:ps.onDrop,handler:handler,target:target,newRange:newRange};target.css({'cursor':'move'});$(document).bind('mousemove',{dragData:dragData},dragndrop.drag).bind('mouseup',{dragData:dragData},dragndrop.drop);});});}})(jQuery);