function searchbox() {
	
	var criteria = document.getElementById('search').value;

var the_length= criteria.length;
var last_char= criteria.charAt(the_length-1);
if(last_char == 's') {
 criteria = criteria.slice(0, -1)
}

document.getElementById('search').value = criteria;

if((criteria == 'pens') || (criteria == 'pen')) {

	document.searchform.action="http://image-promos.com/gallery/template/products/cat/ " + criteria + ".html";
document.searchform.submit();
return false;
	}
else if((criteria == 'lighter') || (criteria == 'lighters')) {

	document.searchform.action="http://image-promos.com/gallery/template/products/cat/ lighter.html";
document.searchform.submit();
return false;
	}
else {
   document.searchform.action="/gallery/default.aspx";
   document.searchform.submit();
}
}