function toggle_visibility(id) {
	obj = document.getElementById(id);
	s = obj.style.display;
	if (s == 'none' || s == '') {
		obj.style.display = 'block';
	}
	else {
		obj.style.display = 'none';
	}
}

//function addslashes(str) {
//str=str.replace(/\'/g,'\\\'');
//str=str.replace(/\"/g,'\\\"');
//str=str.replace(/\\/g,'\\\\');
//str=str.replace(/\0/g,'\\0');
//return str;
//}
//function stripslashes(str) {
//str=str.replace(/\\'/g,'\'');
//str=str.replace(/\\"/g,'\"');
//str=str.replace(/\\\\/g,'\\');
//str=str.replace(/\\0/g,'\0');
//return str;
//}