$(document).ready( function () {
	$().checkbox({checked: "images/common/checked.gif", unchecked: "images/common/unchecked.gif"});
	$('#check label').click(function (){
			$(this).next().click();			  
	});
});
	
jQuery.fn.checkbox = function (opt) {
	jQuery("input[@type='checkbox']", this).hide().each( function () {
	
		jQuery("<img>")
			.attr( {src: this.checked ? opt.checked : opt.unchecked } )
			.click( function() {
					var check = jQuery(this).next()[0].checked == true;
					jQuery(this)
						.attr( { src: check ? opt.unchecked : opt.checked } )
						.next()[0].checked = !check;
			})
			.insertBefore(this);
	});
}