function addListen(element, name, handler) {
	if (element.addEventListener) {
		element.addEventListener(name,handler,false);
	} else if (element.attachEvent) {
		element.attachEvent('on'+name,handler);
	}
}

function displayComment(){
	if (!document.getElementById('pr')){
		if (document.getElementById('comment-form')){
			var d=document.getElementById('comment-form').style;
			if (d.display=='block' || d.display==''){
				d.display='none';
			}else{
				d.display='block';
			}
		}
	}
}

window.onload=function(){
	if (document.getElementById('addCom')) {
		displayComment();
		addListen(document.getElementById('addCom'),'click',displayComment);
	}
}