// JavaScript Document


/*function initNav() {
	var menuDiv = document.getElementById("nav_cont");
	var containedDivElements = menuDiv.getElementsByTagName("div");
	
	// run through all contained elements:
	for (var i = 0; i < containedDivElements.length; i++) {
		var elem = containedDivElements[i];
		
		var menu_cont_prefix = "menu_level_";
		if (elem.className.substr(0,menu_cont_prefix.length) == menu_cont_prefix) {
			continue;
		}
		
		var prefix="";
		if (elem.className.substr(0,2)=="t_") {prefix="t_";}
		else if (elem.className.substr(0,2)=="b_") {prefix="b_";}
		elem.on_class = prefix + "on menuitem";
		elem.off_class = prefix + "off menuitem";
		
		elem.onmouseover = function() {
			this.className = this.on_class;
		}
		elem.onmouseout = function() {
			this.className = this.off_class;
		}
		
		var elem_link = elem.getElementsByTagName("a");
		elem.href=elem_link[0].href;
		
		elem.onclick = function() {
			document.location.href = this.href;
		}
		
	}
}*/

var preload_imgs = new Array();



function initUI() {

	initHoverButtons();

	preloadImgs();
	
	//initNav();

}



function loadVideo(id) {
  var vidWin;
  if(vidWin){
    if(!vidWin.closed) vidWin.close();
  }
  vidWin = open('../videos/?fuseaction=view&video_id=' + id, 'vidWin', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,copyhistory=no,width=620,height=620,left=200,top=200,screenX=200,screenY=200');
}



function preloadImgs() {

	var args = preload_imgs;

	document.imageArray = new Array(args.length);

	for(var i=0; i<args.length; i++) {

		document.imageArray[i] = new Image;

		document.imageArray[i].src = args[i];

	}

}



document.getElementsByClassName = function(cl) {

	var retnode = [];

	var myclass = new RegExp('\\b'+cl+'\\b');

	var elem = this.getElementsByTagName('*');

	for (var i = 0; i < elem.length; i++) {

	var classes = elem[i].className;

	if (myclass.test(classes)) retnode.push(elem[i]);}

	return retnode;

};



function initHoverButtons() {

	var butElements = document.getElementsByClassName('hoverbutton');

	

	// run through all elements with 'hoverbutton' class:

	for (var i = 0; i < butElements.length; i++) {

		var elem = butElements[i];		

		

		preload_imgs.push(genHoverSrc(elem.src,2));

		

		elem.onmouseover = function() {

			this.src = genHoverSrc(this.src,2);

		}

		

		elem.onmouseout = function() {

			this.src = genHoverSrc(this.src,1);

		}

		

	}

}



function genHoverSrc(img_src,state) {

	var ext = img_src.substring(img_src.length-4,img_src.length);

	var pre_ext = img_src.substring(0,img_src.length-5);

	return(pre_ext + state.toString() + ext);

}


var popUpWin=0;
function popUpWindow(URLStr, left, top, width, height, scrollbars) {
  if(popUpWin)
  {
    if(!popUpWin.closed) popUpWin.close();
  }

	// center window
	w = screen.availWidth;
	h = screen.availHeight;

	var popW = width, popH = height;
	var leftPos = (w-popW)/2, topPos = (h-popH)/2;
	// end center window
  
	popUpWin = open(URLStr, 'popUpWin', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars='+scrollbars+',resizable=yes,copyhistory=yes,width='+width+',height='+height+',left='+leftPos+', top='+topPos+',screenX='+leftPos+',screenY='+topPos+'');
}