http://www.ericmmartin.com/projects/simplemodal/
(function($){var ie6=$.browser.msie&&parseInt($.browser.version)==6&&!window['XMLHttpRequest'],ieQuirks=$.browser.msie&&!$.boxModel,w=[];$.modal=function(data,options){return $.modal.impl.init(data,options);};$.modal.close=function(){$.modal.impl.close();};$.fn.modal=function(options){return $.modal.impl.init(this,options);};$.modal.defaults={opacity:50,overlayId:'simplemodal-overlay',overlayCss:{},containerId:'simplemodal-container',containerCss:{},dataCss:{},zIndex:1000,close:true,closeHTML:'<a class="modalCloseImg" title="Close"></a>',closeClass:'simplemodal-close',position:null,persist:false,onOpen:null,onShow:null,onClose:null};$.modal.impl={opts:null,dialog:{},init:function(data,options){if(this.dialog.data){return false;}this.opts=$.extend({},$.modal.defaults,options);this.zIndex=this.opts.zIndex;this.occb=false;if(typeof data=='object'){data=data instanceof jQuery?data:$(data);if(data.parent().parent().size()>0){this.dialog.parentNode=data.parent();if(!this.opts.persist){this.dialog.orig=data.clone(true);}}}else if(typeof data=='string'||typeof data=='number'){data=$('<div/>').html(data);}else{alert('SimpleModal Error: Unsupported data type: '+typeof data);return false;}this.dialog.data=data.addClass('simplemodal-data').css(this.opts.dataCss);data=null;this.create();this.open();if($.isFunction(this.opts.onShow)){this.opts.onShow.apply(this,[this.dialog]);}return this;},create:function(){w=this.getDimensions();if(ie6){this.dialog.iframe=$('<iframe src="javascript:false;"/>').css($.extend(this.opts.iframeCss,{display:'none',opacity:0,position:'fixed',height:w[0],width:w[1],zIndex:this.opts.zIndex,top:0,left:0})).appendTo('body');}this.dialog.overlay=$('<div/>').attr('id',this.opts.overlayId).addClass('simplemodal-overlay').css($.extend(this.opts.overlayCss,{display:'none',opacity:this.opts.opacity/100,height:w[0],width:w[1],position:'fixed',left:0,top:0,zIndex:this.opts.zIndex+1})).appendTo('body');this.dialog.container=$('<div/>').attr('id',this.opts.containerId).addClass('simplemodal-container').css($.extend(this.opts.containerCss,{display:'none',position:'fixed',zIndex:this.opts.zIndex+2})).append(this.opts.close?$(this.opts.closeHTML).addClass(this.opts.closeClass):'').appendTo('body');this.setPosition();if(ie6||ieQuirks){this.fixIE();}this.dialog.container.append(this.dialog.data.hide());},bindEvents:function(){var self=this;$('.'+this.opts.closeClass).bind('click.simplemodal',function(e){e.preventDefault();self.close();});$(window).bind('resize.simplemodal',function(){w=self.getDimensions();self.setPosition();if(ie6||ieQuirks){self.fixIE();}else{self.dialog.iframe&&self.dialog.iframe.css({height:w[0],width:w[1]});self.dialog.overlay.css({height:w[0],width:w[1]});}});},unbindEvents:function(){$('.'+this.opts.closeClass).unbind('click.simplemodal');$(window).unbind('resize.simplemodal');},fixIE:function(){var p=this.opts.position;$.each([this.dialog.iframe||null,this.dialog.overlay,this.dialog.container],function(i,el){if(el){var bch='document.body.clientHeight',bcw='document.body.clientWidth',bsh='document.body.scrollHeight',bsl='document.body.scrollLeft',bst='document.body.scrollTop',bsw='document.body.scrollWidth',ch='document.documentElement.clientHeight',cw='document.documentElement.clientWidth',sl='document.documentElement.scrollLeft',st='document.documentElement.scrollTop',s=el[0].style;s.position='absolute';if(i<2){s.removeExpression('height');s.removeExpression('width');s.setExpression('height',''+bsh+' > '+bch+' ? '+bsh+' : '+bch+' + "px"');s.setExpression('width',''+bsw+' > '+bcw+' ? '+bsw+' : '+bcw+' + "px"');}else{var te,le;if(p&&p.constructor==Array){if(p[0]){var top=typeof p[0]=='number'?p[0].toString():p[0].replace(/px/,'');te=top.indexOf('%')==-1?top+' + (t = '+st+' ? '+st+' : '+bst+') + "px"':parseInt(top.replace(/%/,''))+' * (('+ch+' || '+bch+') / 100) + (t = '+st+' ? '+st+' : '+bst+') + "px"';}if(p[1]){var left=typeof p[1]=='number'?p[1].toString():p[1].replace(/px/,'');le=left.indexOf('%')==-1?left+' + (t = '+sl+' ? '+sl+' : '+bsl+') + "px"':parseInt(left.replace(/%/,''))+' * (('+cw+' || '+bcw+') / 100) + (t = '+sl+' ? '+sl+' : '+bsl+') + "px"';}}else{te='('+ch+' || '+bch+') / 2 - (this.offsetHeight / 2) + (t = '+st+' ? '+st+' : '+bst+') + "px"';le='('+cw+' || '+bcw+') / 2 - (this.offsetWidth / 2) + (t = '+sl+' ? '+sl+' : '+bsl+') + "px"';}s.removeExpression('top');s.removeExpression('left');s.setExpression('top',te);s.setExpression('left',le);}}});},getDimensions:function(){var el=$(window);var h=$.browser.opera&&$.browser.version>'9.5'&&$.fn.jquery<='1.2.6'?document.documentElement['clientHeight']:el.height();return[h,el.width()];},setPosition:function(){var top,left,hCenter=(w[0]/2)-((this.dialog.container.height()||this.dialog.data.height())/2),vCenter=(w[1]/2)-((this.dialog.container.width()||this.dialog.data.width())/2);if(this.opts.position&&this.opts.position.constructor==Array){top=this.opts.position[0]||hCenter;left=this.opts.position[1]||vCenter;}else{top=hCenter;left=vCenter;}this.dialog.container.css({left:left,top:top});},open:function(){this.dialog.iframe&&this.dialog.iframe.show();if($.isFunction(this.opts.onOpen)){this.opts.onOpen.apply(this,[this.dialog]);}else{this.dialog.overlay.show();this.dialog.container.show();this.dialog.data.show();}this.bindEvents();},close:function(){if(!this.dialog.data){return false;}if($.isFunction(this.opts.onClose)&&!this.occb){this.occb=true;this.opts.onClose.apply(this,[this.dialog]);}else{if(this.dialog.parentNode){if(this.opts.persist){this.dialog.data.hide().appendTo(this.dialog.parentNode);}else{this.dialog.data.remove();this.dialog.orig.appendTo(this.dialog.parentNode);}}else{this.dialog.data.remove();}this.dialog.container.remove();this.dialog.overlay.remove();this.dialog.iframe&&this.dialog.iframe.remove();this.dialog={};}this.unbindEvents();}};})(jQuery);
а нельзя к примеру из if(e.pageY- <= 5) вычесть прокрутку?