function check_email(email){
	if(email!=""){
		reg="[a-zA-Z0-9._-]+[@][a-zA-Z0-9_-]+[.][a-zA-Z0-9._-]+";
		mail_str = email;
		is_mail = mail_str.match(reg);
		if(is_mail!=null){
			mail_str = is_mail[0];
			mail_str = mail_str.replace(" ", "");
			if(email==mail_str){
				return true;}}}
	return false;}
function check_url(url)
{
	if(url!=""){
		reg="(http:\/\/|https:\/\/)[\&\=\?\/a-zA-Z0-9._-]+(\.php|\.htm|\.html|\/)?";
		url_str = url;
		is_url = url_str.match(reg);
		if(is_url!=null){
			url_str = is_url[0];
			url_str = url_str.replace(" ", "");
			if(url==url_str){
				return true;}}}
	return false;
}