if (document.all || document.getElementById) {

	window.onload = setrequired;

}

function setrequired() {

		changed(document.comment.comment_name);

		changed(document.comment.comment_body);

		checkifempty();

}

function changed() {

	if (document.comment.comment_name.value=='') {

		document.getElementById('comment_name').style.background='#eeeeee';

	}

	else {

		document.getElementById('comment_name').style.background='#faf4d0';

	}

	if (document.comment.comment_body.value=='') {

		document.getElementById('comment_body').style.background='#eeeeee';

	}

	else {

		document.getElementById('comment_body').style.background='#faf4d0';

	}

	checkifempty();

}

function checkifempty() {

	if (document.comment.comment_name.value=='' || document.comment.comment_body.value=='') {

		document.getElementById('add_comment').onclick=function(){return false;}
		document.getElementById('add_comment').style.cursor='default';
		document.getElementById('add_comment').src='/images/btn_add_comment_dactv.gif';

	}

	else {

		document.getElementById('add_comment').onclick=function(){return true;}
		document.getElementById('add_comment').style.cursor='hand';
		document.getElementById('add_comment').src='/images/btn_add_comment_actv.gif';

	}

}