//onKeyUp
		function test2 (){addEvent(document.getElementById("zipcodeback"), 'keyup', test);
		
		}
		function test (){AjaxZip2.zip2addr('zipcodefront','c12','c13','zipcodeback','c15','c14');
		
		}
		window.onload = test2;

function addEvent(element, type, func){
	if( element.addEventListener ){
		element.addEventListener(type, func, true);
	}else if( element.attachEvent ){
		element.attachEvent("on" + type, func);
	}
}