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<!DOCTYPE HTML>
<html>
<head>
<title></title>
<meta charset="utf-8" />
<style type="text/css">
#general_overlay{
background-color: #FF0099;
width: 300px;
height: 50px;
}
</style>
</head>
<body>
<script src="http://code.jquery.com/jquery-latest.js"></script>
<script>
(function($) {
$.fn.pluginName = function( settings ) {
var settings = $.extend( {
}, settings);
return this.each(function() {
var element = $(this);
if($('#general_overlay').length) {alert('No pasarán'); return} ;
if(!$('#general_overlay').length){
$("<div id='general_overlay'></div>").appendTo($('body'));
};
var genOverlay = $('#general_overlay');
element.click( function(){
genOverlay.show();
});
$('body').on('click.overPop', '#general_overlay', function(){
$(this).hide();
// console.log($(this));
});
});
};
}) (jQuery) ;
</script>
<button onclick="$(this).pluginName()">Нажми </button>
<button onclick="$(this).pluginName()">Нажми 2</button>
</body>
</html>