function toggle_form(selection,form) {
	if(selection=='url'){

		document.forms[form].elements['userfile'].value = "";
		document.forms[form].elements['userfile'].enabled = false;
		document.forms[form].elements['url_location'].enabled=true;
		document.forms[form].elements['url_name'].enabled=true;
	} else {

		document.forms[form].elements['userfile'].enabled = true;
		document.forms[form].elements['url_location'].value = "";
		document.forms[form].elements['url_name'].value = "";
		document.forms[form].elements['url_location'].enabled=false;
		document.forms[form].elements['url_name'].enabled=false;
	}

}