/*******************************************************************************
*  ruthsarian_utilities.js : 2005.09.01
* -----------------------------------------------------------------------------
*  A group of useful JavaScript utilities that can aid in the development
*  of webpages.
*******************************************************************************/

/* event_attach() takes care of attaching event handlers (functions) to events. 
 * this simplifies the process of attaching multiple handlers to a single event
 *
 * NOTE: the onload stack is executed in a LIFO manner to mimic 
 *       IE's window.attachEvent function. However, Opera also has its own
 *       window.attachEvent function which executes the onload stack in a 
 *       FIFO manner. FIFO is better, but IE has a larger user base, so
 *       LIFO is the way we go.
 */
function event_attach( event , func )
{
	if ( window.attachEvent )
	{
		window.attachEvent( event , func );
	}
	else
	{
		if ( ( typeof( func ) ).toLowerCase() != 'function' )
		{
			return;
		}
		if ( ( typeof( document.event_handlers ) ).toLowerCase() == 'undefined' )
		{
			document.event_handlers = new Array();
		}
		if ( ( typeof( document.event_handlers[ event ] ) ).toLowerCase() == 'undefined' )
		{
			document.event_handlers[ event ] = new Array();
		}
		if ( ( typeof( eval( 'window.' + event ) ) ).toLowerCase() != 'function' )
		{
			eval( 'window.' + event + ' = function () { if ( ( typeof( document.event_handlers[ \'' + event + '\' ] ) ).toLowerCase() != \'undefined\' ) { for ( i = document.event_handlers[ \'' + event + '\' ].length - 1 ; i >= 0  ; i-- ) { document.event_handlers[ \'' + event + '\' ][ i ](); } } } ' );
		}
		document.event_handlers[ event ][ document.event_handlers[ event ].length ] = func;
	}
}


/* handler for Netscape Navigator clients that screw up the display
 * of CSS pages when reloaded
 */
function NN_reloadPage( init )
{
	if ( init == true ) with ( navigator )
	{
		if ( ( appName == "Netscape" ) && ( parseInt ( appVersion ) == 4 ) )
		{
			document.NN_pgW = innerWidth;
			document.NN_pgH = innerHeight;
			event_attach ( 'onresize' , NN_reloadPage );
		}
	}
	else if ( innerWidth != document.NN_pgW || innerHeight != document.NN_pgH )
	{
		location.reload();
	}
}

/* Min Width v1.1.3 by PVII-www.projectseven.com
 * http://www.projectseven.com/tutorials/css/minwidth/index.htm
 *
 * modified for readability and ability to limit application to
 * IE only so CSS min-width property may be used by compliant
 * browsers.
 *
 * NOTE: horizontal spacing (margins, padding, borders) set in
 *       % values may cause IE to crash when using this script.
 *
 * ALSO: padding, margins, and borders on parents of the element
 *       you specify may result in IE getting suck in an infinite
 *       loop. Please be sure to check your layout before you 
 *       publish it!
 */
function set_min_width( obj_name , min_width , ieOnly )
{
	if ( ( typeof( ieOnly ) ).toLowerCase() == 'undefined' )
	{
		ieOnly = true;
	}
	if ( ieOnly == false || ( document.getElementById && navigator.appVersion.indexOf( "MSIE" ) > -1 && !window.opera ) )
	{
		document.min_width_obj_name = obj_name;
		document.min_width_size = min_width;
		document.resizing = false;
		event_attach( 'onload' , control_min_width );
		event_attach( 'onresize' , control_min_width );
	}
}
function control_min_width()
{
	var cw , w , pl , pr , ml , mr , br , bl , ad , theDiv = document.min_width_obj_name;
	var g = document.getElementById( theDiv );
	w = parseInt(document.min_width_size);
	if ( g && document.body && document.body.clientWidth )
	{
		gs = g.currentStyle;
		cw = parseInt( document.body.clientWidth );
		pl = parseInt( gs.paddingLeft );
		pr = parseInt( gs.paddingRight );
		ml = parseInt( gs.marginLeft );
		mr = parseInt( gs.marginRight );
		bl = parseInt( gs.borderLeftWidth );
		br = parseInt( gs.borderRightWidth );
		ml = ml ? ml : 0;
		mr = mr ? mr : 0;
		pl = pl ? pl : 0;
		pr = pr ? pr : 0;
		bl = bl ? bl : 0;
		br = br ? br : 0;
		ad = pl + pr + ml + mr + bl + br;
		if ( cw <= w )
		{
			w -= ad;
			g.style.width = w + "px";
		}
		else
		{
			g.style.width = "auto";
		}
	}
}

/* font size functions operate on the body element's
 * style and defines sizes in percentages. because
 * the default font size is set to 0 in the array,
 * the first value in the font_sizes array should
 * _ALWAYS_ be 100.
 *
 *	var font_sizes = new Array( 100, 110, 120 );
 *	var current_font_size = 0;
 *	event_attach( 'onload' , loadFontSize );
 */
function loadFontSize ()
{
	current_font_size = parseInt( '0' + getCookie ( "font_size" ) );
	setFontSize ( current_font_size );
}
function setFontSize( size )
{
	if( size >= 0 && size < font_sizes.length )
	{
		current_font_size = size;
	}
	else if( ++current_font_size >= font_sizes.length )
	{
		current_font_size = 0;
	}
	if ( document.body )
	{
		document.body.style.fontSize = font_sizes[ current_font_size ] + '%';
		setCookie( "font_size" , current_font_size );
	}
}

/* standard trim function to remove leading and trailing 
 * whitespace from a given string
 */
function trim( str )
{
   return str.replace(/^\s*|\s*$/g,"");
}

function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}