var isIE//@cc_on=1;
function addEvent(o,e,f){isIE?o.attachEvent('on'+e,f):o.addEventListener(e,f,false);}
var elemIds = new Array('person', 'corporation');
function change(id){
	for(i = 0; i < elemIds.length; i++){
		if(elemIds[i] == id){
			document.getElementById(elemIds[i]).style.display = 'block';
		}else{
			document.getElementById(elemIds[i]).style.display = 'none';
		}
	}
}
addEvent(window, 'load', function(){change('person');});