function getCookie( name ) { 
    try{
	    var start = document.cookie.indexOf( name + "=" ); 
	    var len = start + name.length + 1; 
	    if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) ) { 
	        return null; 
	    } 
	    if ( start == -1 ) return null; 
	    var end = document.cookie.indexOf( ';', len ); 
	    if ( end == -1 ) end = document.cookie.length; 
	    return unescape( document.cookie.substring( len, end ) );
    }catch(e){
    	return null;
    } 
} 
 
function setCookie( name, value, expires, path, domain, secure ) { 
    try{
	    var today = new Date();  
	    if ( expires ) { 
	        expires = expires * 1000 * 60 * 60 * 24; 
	    } 
	    var expires_date = new Date( today.getTime() + (expires) ); 
	    document.cookie = name+'='+escape( value ) + 
	        ( ( expires ) ? ';expires='+expires_date.toGMTString() : '' ) + //expires.toGMTString() 
	        ( ( path ) ? ';path=' + path : '' ) + 
	        ( ( domain ) ? ';domain=' + domain : '' ) + 
	        ( ( secure ) ? ';secure' : '' );
	}catch(e){
	} 
} 
 
function deleteCookie( name, path, domain ) { 
    try{
    	if ( getCookie( name ) ) document.cookie = name + '=' + 
            ( ( path ) ? ';path=' + path : '') + 
            ( ( domain ) ? ';domain=' + domain : '' ) + 
            ';expires=Thu, 01-Jan-1970 00:00:01 GMT'; 
   }catch(e){
   }         
}
function getDefaultDate(datestr){
	var now=new Date();
	var now_str = now.getYear()+"-";
	var month = now.getMonth()+1;
	if (month<10){
		now_str=now_str+"0"+month;
	}else{
		now_str=now_str+month;
	}
	now_str=now_str+"-";
	if (now.getDate()<10){
		now_str=now_str+"0"+now.getDate();
	}else{
		now_str=now_str+now.getDate();
	}
	if (now_str>datestr){
		datestr = now_str;
	}
	return datestr;
}