/*
	GLOBAL JAVASCRIPT INCLUDE
	TAYLORWELD.COM
	CREATED 5/10/08
	Peter DeMarco
*/


var d = window.document;

//////////////////////////////////////
//  GENERIC RETURN ELEMENT FUNCTION //
//////////////////////////////////////

function getE( v ) {
  // e is for element!
  e = false;
  
  if ( d.getElementById ) {
    e = d.getElementById( v );
  }
  else if ( d.all ) {
    e = d.all[ v ];
  }

  return e;
}


/*
	AJAX BASE FUNCTIONALITY
*/

var xmlhttp = null;
var displayDiv = "";
var nextFunc = "";

////////////////////////////////
//	BASIC AJAX LOADER					//
////////////////////////////////

function getPage( url, second ) {

	if ( second != false ) nextFunc = second;
	else nextFunc = "";
	
	xmlhttp=null;
	if (window.XMLHttpRequest) {// code for all new browsers
  	xmlhttp=new XMLHttpRequest();
  }
	else if (window.ActiveXObject) {// code for IE5 and IE6
  	xmlhttp=new ActiveXObject( "Microsoft.XMLHTTP" );
  }
	if (xmlhttp!=null) {
		xmlhttp.onreadystatechange=stateChange;
		xmlhttp.open( "GET", url, true );
		xmlhttp.send( null );
  }
}

////////////////////////////////
//	EVENT HANDLER FOR HTTP		//
//	STATE CHANGE							//
////////////////////////////////

function stateChange() {
	if (xmlhttp.readyState==4) {// 4 = "loaded"
		if (xmlhttp.status==200) {// 200 = OK
			e = getE( displayDiv );
			e.innerHTML = xmlhttp.responseText;
			if ( nextFunc != "" ) eval( nextFunc );
		}
	}
}


/*
	WHEEL PAGES FUNCTIONS
*/

//////////////////////////////////
//	LOAD THE WHEEL TYPE DATA		//
//////////////////////////////////

function getWheelType( tid, wid ) {
	if ( wid > 0 ) {
		displayDiv = "wheelsLeftSub"+tid;
		loadXMLDoc( "getTypeData.php?tid="+tid, "getWheelData( " + wid + " );" );
		clearTypeDivs( tid );
	}
}

//////////////////////////////////
//	LOAD THE WHEEL DATA					//
//////////////////////////////////

function getWheelData( id ) {
	displayDiv = "wheelsRight";
	loadXMLDoc( "getWheelData.php?id="+id, false );
}

//////////////////////////////////
//	CLEAR THE TYPE DIVS					//
//////////////////////////////////

var typeDivs = new Array();

function clearTypeDivs( tid ) {
  for ( i=0, j=typeDivs.length; i<j; i++ ) {
  	if ( typeDivs[i] != tid ) {
  		e = getE( "wheelsLeftSub"+typeDivs[i] );
  		e.innerHTML = "";
  	}
  }
}

//////////////////////////////////
//	FLIP THE CURRENT IMAGE			//
//////////////////////////////////

function flipWheel( img ) {
	e = getE( "wheelImageMedium" );
	s = "<a href='#' onclick='openHires( \"" + img + "\" ); return false;'>";
	s+= "click to enlarge";
	s+= "<img src='/_img/wheels/medium/" + img + "' />";
	s+= "</a>";
	
	e.innerHTML = s;
}

////////////////////////////////////
//	OPEN / CLOSE THE HIRES IMAGE	//
////////////////////////////////////

function openHires( img ) {
	e = getE( "wheelImageHires" );
	if ( img ) {
		s = "<a href='#' onclick='openHires( false ); return false;'>";
		s+= "click to close";
		s+= "<img src='/_img/wheels/large/" + img + "' />";
		s+= "</a>";
	}
	else s = "";
	
	e.innerHTML = s;
}





/*
	SLIDESHOW FUNCS
*/

var curr = "";
var slideTime = 6000;

function getSlide() {
	displayDiv = "slides";
	getPage( "/getSlide.php?curr=" + curr, "setCurr();" );
}

function setCurr() {
	e = getE( "slide" );
	curr = e.src;
}



/*
	WHEEL FUNCTIONS
*/

function getImg( id ) {
	displayDiv = "galImage";
	getPage( "getImage.php?id=" + id );
}