///////////////////////////////////////////////////////////////////
// Cookie handling routines.
//
//  Author: Vidar Kongsli 1999 / 2001
//
///////////////////////////////////////////////////////////////////
// Return true is the cookie with name given by 'unid' exists
function checkCookie( unid ) {
	if (document.cookie.indexOf( unid ) == -1 ) {
		return true;	
	}
//	return true;
//	var cookie = getCookie( unid );
//	alert(cookie);
//	if ( cookie=="") {
//		return true;
//	}
	return window.confirm( "A certain user is allowed to submit this form only once. It seems that you have submitted this form earlier. Do you want to try to submit anyway?" ) ;
}
function cookieExists( unid ) {
	if (document.cookie.indexOf( unid ) == -1 ) {
		return false;	
	} else {
		return true;
	}
}
//function: setCookieExp
//scope: local but general
//purpose: stores a cookie
//param: nam - name of the cookie
//param: val - value of the cookie
//param: day - expiration time in days
function setCookieExp(nam,val,day) {
	var exp=new Date();
	exp.setTime(exp.getTime()+day*86400000);
	document.cookie=nam+'='+escape(val)+'; expires='+exp.toGMTString();
}
//function: setCookie
//purpose: setCookieExp with default expiration in 14 days
//see: setCookieExp()
function setCookie(nam,val) {
	setCookieExp(nam,val,14);
}
//function: getCookie
//scope: local but general
//purpose: retrieves the value of the named cookie
//param: nam - name of the cookie
//return: value of the cookie or empty string if cookie is not set
function getCookie(nam) {
	var allCook=document.cookie;
	new RegExp(name + "=([^;]*)").exec( allCook );
	return unescape( RegExp.$1 );
}