function strstr( haystack, needle, bool ) {
    var pos = 0;
 
    haystack += '';
    pos = haystack.indexOf( needle );
    if( pos == -1 ){
        return false;
    } else{
        if( bool ){
            return haystack.substr( 0, pos );
        } else{
            return haystack.slice( pos );
        }
    }
}

function top_jobs(){
	if (!document.getElementsByTagName) return false;
	var counter = 0;
	var option = document.getElementsByTagName('option');
	var td = document.getElementsByTagName('td');
	var tdCount = td.length;
	var optionCount = option.length;

	for(var i=0; i<tdCount; i++){
		var cell = td[i];
		if(strstr(cell.innerHTML, 'EMPLOYMENT (')){
			if(counter == 2){
				cell.innerHTML = '<a href="http://theworldlink.com/topads/job/top_jobs/"><img src="/art/admarket/help_wanted.jpg" border="0"></a><br><a href="http://theworldlink.com/topads/job/top_jobs/">TOP JOBS</a>';
			}
			counter++;
		}
	}

	for(var i=0; i<optionCount; i++){
		var opt = option[i];
		if(strstr(opt.innerHTML, 'EMPLOYMENT (')){
			opt.innerHTML = 'TOP JOBS';
		}
	}
}

top_jobs();