//var kws = [/((ฟุต)?บอล(โลก)?)/ig, /(ฟีฟ่า)/ig, /(FIFA)/ig, /(world\s*cup)/ig];
var kws = ['ฟุตบอล', 'บอล', 'บอลโลก', 'ฟีฟ่า', 'FIFA', 'world cup'];
var css=document.createElement('link');
css.type = 'text/css'; 
css.rel = 'stylesheet';
css.media = 'screen';
css.href = 'http://www.mthai.com/smartad/smartad.css';
document.getElementsByTagName("head")[0].appendChild(css);
/*
var s=document.createElement('style');
s.setAttribute('type','text/css');
s.innerHTML='span.smartad-link {border-bottom:3px double #ff0000;text-decoration:none;position:relative;} span.smartad-popup {display:block;position:absolute;left:0px;top:1em;background:transparent;width:284px;height:212px;text-align:left;overflow:hidden;z-index:99;text-indent:0px;} span.smartad-popup object {margin:22px 0px 0px 5px;}';
document.body.appendChild(s);
*/
var t = [];
var maxmatch = kws.length;
if (window.location.host === 'sport.mthai.com') {
	var selector = '.entry-content';
} else {
	var selector = '#topic_body';
}
var h1 = jQuery(selector).html();

if (window.location.host === 'sport.mthai.com') {
	h1 = jQuery('.entry-content').html();
} else if (window.location.host === 'talk.mthai.com') {
	h1 = jQuery('#topic_body').html();
}
var offset = 0;
for (i=0;i<maxmatch;i++){
	var pos = h1.length;
	var ck = undefined;
	for (k in kws){
		var p = h1.indexOf(kws[k], offset);
		if (p < pos && p != -1) {
			// double check that keyword is not in tag attribute
			var endtag = h1.indexOf('>', p);
			var opentag = h1.indexOf('<', p);
			if ((endtag != -1) && (opentag != -1) && (endtag < opentag)) {
				t.push(h1.substring(offset, p));
				pos = p; offset = pos + kws[k].length;
			} else {
				pos = p; ck=kws[k];
				if ((pos - offset) < 250) {
					kws.splice(k, 1); 
				}
			}
		}
	}
	if (ck) {
		t.push(h1.substring(offset, pos));
		t.push('<span class="smartad-link">'+ck+'<span class="smartad-popup" style="display:none"></span></span>');
		offset = pos + ck.length;
	}
}
t.push(h1.substring(offset));
jQuery(selector).html(t.join(''));
jQuery('span.smartad-link').hover(function(){
		var that = jQuery(this).find('.smartad-popup');
		that.show().html('<iframe scrolling="no" marginwidth="0" marginheight="0" frameborder="0" src="http://www.mthai.com/smartad/popup.php" width="284" height="212"></iframe>');
		// jQuery.getJSON('http://www.mthai.com/smartad/smartad.php?callback=?',function(d){ that.html(d); });
	},
	function(){
		var that = jQuery(this).find('.smartad-popup');
		that.find('iframe').remove();
		that.hide();
	});