/*
 *author:		peter miller (petermiller1986@gmail.com)
 *
 *description:	this file contains all of the javascript functions used in the tt website.
 *			refer to individual function notes for complete descriptions.
 */
function pausecomp(millis)
{
	var date = new Date();
	var curDate = null;
	
	do { curDate = new Date(); }
	while(curDate-date < millis);
}
function loginsha1()
{
	pausecomp(1000);
	document.loginform.loginpassword.value = SHA1(document.loginform.loginpassword.value);
	document.loginform.submit();
}
function SHA1 (msg)
{
/**
*
*  Secure Hash Algorithm (SHA1)
*  http://www.webtoolkit.info/
*
**/
	function rotate_left(n,s)
	{
		var t4 = ( n<<s ) | (n>>>(32-s));
		return t4;
	};
	function lsb_hex(val)
	{
		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;
	};
	function cvt_hex(val)
	{
		var str="";
		var i;
		var v;
		for( i=7; i>=0; i-- )
		{
			v = (val>>>(i*4))&0x0f;
			str += v.toString(16);
		}
		return str;
	};
	function Utf8Encode(string)
	{
		string = string.replace(/\r\n/g,"\n");
		var utftext = "";
		for (var n = 0; n < string.length; n++)
		{
			var c = string.charCodeAt(n);
			if (c < 128)
			{
				utftext += String.fromCharCode(c);
			}
			else if((c > 127) && (c < 2048))
			{
				utftext += String.fromCharCode((c >> 6) | 192);
				utftext += String.fromCharCode((c & 63) | 128);
			}
			else
			{
				utftext += String.fromCharCode((c >> 12) | 224);
				utftext += String.fromCharCode(((c >> 6) & 63) | 128);
				utftext += String.fromCharCode((c & 63) | 128);
			}
		}

		return utftext;
	};
	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;
	msg = Utf8Encode(msg);
	var msg_len = msg.length;
	var word_array = new Array();
	for( i=0; i<msg_len-3; i+=4 )
	{
		j = msg.charCodeAt(i)<<24 | msg.charCodeAt(i+1)<<16 |
		msg.charCodeAt(i+2)<<8 | msg.charCodeAt(i+3);
		word_array.push( j );
	}
	switch( msg_len % 4 )
	{
		case 0:
			i = 0x080000000;
		break;
		case 1:
			i = msg.charCodeAt(msg_len-1)<<24 | 0x0800000;
		break;

		case 2:
			i = msg.charCodeAt(msg_len-2)<<24 | msg.charCodeAt(msg_len-1)<<16 | 0x08000;
		break;

		case 3:
			i = msg.charCodeAt(msg_len-3)<<24 | msg.charCodeAt(msg_len-2)<<16 | msg.charCodeAt(msg_len-1)<<8	| 0x80;
		break;
	}
	word_array.push( i );
	while( (word_array.length % 16) != 14 ) word_array.push( 0 );
	word_array.push( msg_len>>>29 );
	word_array.push( (msg_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;
	}
	var temp = cvt_hex(H0) + cvt_hex(H1) + cvt_hex(H2) + cvt_hex(H3) + cvt_hex(H4);
	return temp.toLowerCase();
}
function searchpopup(url)
{
	txt=document.searchbox.searchquery.value;
	searchstring=url+"?searchquery="+txt;
	window.open(searchstring,"searchwindow","status=yes,width=200,height=800,scrollbars=yes");
	return false;
}