var ajax_method			= 'post';
var ajax_threw_error	= new Array;


/*	*************************************************************
 *	AJAX funcions
 */

function ajax_request ( url, params, callbackComplete) {
	
	//alert(url);
	//params = Object.toJSON(params);
	//alert(callbackComplete);

	if ( ajax_threw_error [ url ] && ( time ( ) - ajax_threw_error [ url ] < 100 ) )
		return false;
	else
		ajax_threw_error [ url ] = null;
	
	new Ajax.Request (
		'/ajax' + ( logged_in ? '_login' : '' ) + '/' + url,
		
		{
			method:			ajax_method,

			parameters:		params,
			
			onSuccess: function (transport, json){
				callbackComplete(transport, json);
			},
			
			onFailure:		function ( transport ) {
				return __ajax_request_failure__ ( url, transport );
			}
		}
	);
	
	return true;
}

function __ajax_request_failure__ ( url, transp ) {
	ajax_threw_error [ url ]	= time ( );
	
	alert ( transp.responseText );
	
	return false;
}



/*	*************************************************************
 *	Array funcions
 */

function print_r ( arr ) {
	var r	= "Array (\n";
	
	for ( var i = 0; i < arr.size ( ); i++ ) {
		r	+= "\t[" + i + "] => " + arr [ i ] + "\n";
	}
	
	r		+= ")";
	
	return r;
}

function in_array ( stringToSearch, arrayToSearch ) {
	var i = 0;
	
	while ( i < arrayToSearch.length ) {
		thisEntry = arrayToSearch [ i ].toString ( );
		
		if ( thisEntry == stringToSearch )
			return true;
		
		i++;
	}
	
	return false;
}

/*	*************************************************************
 *	Date-time funcions
 */

function time ( ) {
	return ( new Date ).getTime ( );
}



/*	*************************************************************
 *	Cookie funcions
 */

function setCookie ( name, value, days ) {
	if ( days ) {
		var date = new Date ( );
		
		date.setTime ( date.getTime ( ) + ( days * 24 * 60 * 60 * 1000 ) );
		
		var expires = "; expires=" + date.toGMTString ( );
	}
	else {
		var expires = "";
	}
	
	document.cookie = name + "=" + value + expires + "; path=/";
}

function readCookie ( name ) {
	var nameEQ	= name + "=";
	var ca		= document.cookie.split ( ';' );
	
	for ( var i = 0; i < ca.length; i++ ) {
		var c = ca [ i ];
		
		while ( c.charAt ( 0 ) == ' ' )
			c = c.substring ( 1, c.length );
		
		if ( c.indexOf ( nameEQ ) == 0 )
			return c.substring ( nameEQ.length, c.length );
	}
	
	return false;
}

function deleteCookie ( name ) {
	createCookie ( name, "", -1 );
}



/*	*************************************************************
 *	Object funcions
 */

function isArray ( obj ) {
	return Object.isArray ( obj );
}

function isFunction ( obj ) {
	return Object.isFunction ( obj );
}

function isString ( obj ) {
	return Object.isString ( obj );
}

function assocSize ( obj ) {
	return Object.assocSize ( obj );
}



/*	*************************************************************
 *	String funcions
 */

function ucfirst ( str ) {
	var fc	= str.substring ( 0, 1 );
	var rc	= str.substring ( 1 );
	
	fc		= fc.toUpperCase ( );
	rc		= rc.toLowerCase ( );
	
	return fc + rc;
}

function bool ( str ) {
	if ( str === true )
		return 1;
	if ( str === false )
		return 0;
}

function sha1(str) {
    var rotate_left = function (n,s) {
        var t4 = ( n<<s ) | (n>>>(32-s));
        return t4;
    };
 
    /*var lsb_hex = function (val) { // Not in use; needed?
        var str="";
        var i;
        var vh;
        var vl;
 
        for ( i=0; i<=6; i+=2 ) {
            vh = (val>>>(i*4+4))&0x0f;
            vl = (val>>>(i*4))&0x0f;
            str += vh.toString(16) + vl.toString(16);
        }
        return str;
    };*/
 
    var cvt_hex = function (val) {
        var str="";
        var i;
        var v;
 
        for (i=7; i>=0; i--) {
            v = (val>>>(i*4))&0x0f;
            str += v.toString(16);
        }
        return str;
    };
 
    var blockstart;
    var i, j;
    var W = new Array(80);
    var H0 = 0x67452301;
    var H1 = 0xEFCDAB89;
    var H2 = 0x98BADCFE;
    var H3 = 0x10325476;
    var H4 = 0xC3D2E1F0;
    var A, B, C, D, E;
    var temp;
 
    //str = this.utf8_encode(str);
    var str_len = str.length;
 
    var word_array = [];
    for (i=0; i<str_len-3; i+=4) {
        j = str.charCodeAt(i)<<24 | str.charCodeAt(i+1)<<16 |
        str.charCodeAt(i+2)<<8 | str.charCodeAt(i+3);
        word_array.push( j );
    }
 
    switch (str_len % 4) {
        case 0:
            i = 0x080000000;
        break;
        case 1:
            i = str.charCodeAt(str_len-1)<<24 | 0x0800000;
        break;
        case 2:
            i = str.charCodeAt(str_len-2)<<24 | str.charCodeAt(str_len-1)<<16 | 0x08000;
        break;
        case 3:
            i = str.charCodeAt(str_len-3)<<24 | str.charCodeAt(str_len-2)<<16 | str.charCodeAt(str_len-1)<<8    | 0x80;
        break;
    }
 
    word_array.push( i );
 
    while ((word_array.length % 16) != 14 ) {word_array.push( 0 );}
 
    word_array.push( str_len>>>29 );
    word_array.push( (str_len<<3)&0x0ffffffff );
 
    for ( blockstart=0; blockstart<word_array.length; blockstart+=16 ) {
        for (i=0; i<16; i++) {W[i] = word_array[blockstart+i];}
        for (i=16; i<=79; i++) {W[i] = rotate_left(W[i-3] ^ W[i-8] ^ W[i-14] ^ W[i-16], 1);}
 
 
        A = H0;
        B = H1;
        C = H2;
        D = H3;
        E = H4;
 
        for (i= 0; i<=19; i++) {
            temp = (rotate_left(A,5) + ((B&C) | (~B&D)) + E + W[i] + 0x5A827999) & 0x0ffffffff;
            E = D;
            D = C;
            C = rotate_left(B,30);
            B = A;
            A = temp;
        }
 
        for (i=20; i<=39; i++) {
            temp = (rotate_left(A,5) + (B ^ C ^ D) + E + W[i] + 0x6ED9EBA1) & 0x0ffffffff;
            E = D;
            D = C;
            C = rotate_left(B,30);
            B = A;
            A = temp;
        }
 
        for (i=40; i<=59; i++) {
            temp = (rotate_left(A,5) + ((B&C) | (B&D) | (C&D)) + E + W[i] + 0x8F1BBCDC) & 0x0ffffffff;
            E = D;
            D = C;
            C = rotate_left(B,30);
            B = A;
            A = temp;
        }
 
        for (i=60; i<=79; i++) {
            temp = (rotate_left(A,5) + (B ^ C ^ D) + E + W[i] + 0xCA62C1D6) & 0x0ffffffff;
            E = D;
            D = C;
            C = rotate_left(B,30);
            B = A;
            A = temp;
        }
 
        H0 = (H0 + A) & 0x0ffffffff;
        H1 = (H1 + B) & 0x0ffffffff;
        H2 = (H2 + C) & 0x0ffffffff;
        H3 = (H3 + D) & 0x0ffffffff;
        H4 = (H4 + E) & 0x0ffffffff;
    }
 
    temp = cvt_hex(H0) + cvt_hex(H1) + cvt_hex(H2) + cvt_hex(H3) + cvt_hex(H4);
    return temp.toLowerCase();
}