//platform and browser check

var ISieWIN = false;
var platform = navigator.appVersion;
var browser = navigator.appName;

if ((platform.indexOf("Win") >= 0) || (platform.indexOf("NT") >= 0))
{
	if(browser == "Microsoft Internet Explorer")
	{
		
		//for layer opacity
		ISieWIN = true;

		//for pngs
		document.writeln('<style type="text\/css">img { visibility:hidden; } <\/style>');
		window.attachEvent("onload", fnLoadPngs);
		
	}	
}








//png fix in IE windows

function fixToo()
{
	if(ISieWIN )
	{
		fnLoadPngs();
	}
}



function fnLoadPngs() {
	var rslt = navigator.appVersion.match(/MSIE (\d+\.\d+)/, '');
	var itsAllGood = (rslt != null && Number(rslt[1]) >= 5.5);

	for (var i = document.images.length - 1, img = null; (img = document.images[i]); i--) {
		if (itsAllGood && img.src.match(/\.png$/i) != null) {
			var src = img.src;
			img.style.width = img.width + "px";
			img.style.height = img.height + "px";
			img.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + src + "', sizingMethod='scale')"
			img.src = "_images/spacer.gif";
		}
		img.style.visibility = "visible";
	}
	
	//alert("png");
}

//rollover stuff
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
	fixToo();
}



var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		
		//nav_articles = newImage("_images/nav_articles-over.png");
		
 nav_a = newImage("_images/nav_home-over.png");	
 nav_b = newImage("_images/nav_about-over.png");	
 nav_c = newImage("_images/nav_game-over.png");	
 nav_d = newImage("_images/nav_register-over.png");	
 nav_e = newImage("_images/nav_coaches-over.png");	
 nav_f = newImage("_images/nav_gear-over.png");	
 nav_g = newImage("_images/nav_contact-over.png");	

 nav_f = newImage("_images/arrow_up-over.png");	
 nav_g = newImage("_images/arrow_down-over.png");	

 nav_h = newImage("_images/nav_region-over.png");	

		
		preloadFlag = true;
	}
}




var kent;
var boxHeight;
var offset;
var scrolling;
var kurOffset = 0;


 

function getComputedHeight(theElt){
        if(ISieWIN){
                tmphght = document.getElementById(theElt).offsetHeight;
        }
        else{
                docObj = document.getElementById(theElt);
                var tmphght1 = document.defaultView.getComputedStyle(docObj, "").getPropertyValue("height");
                tmphght = tmphght1.split('px');
                tmphght = tmphght[0];
        }
        return tmphght;
}

 
function setter()
{
 

	kent = document.getElementById('kontent');

 
 	
	boxHeight = getComputedHeight("kontent");
	
	 
	//alert(boxHeight);

}

function scroll(y)
{
 
	scrolling = 1;
	offset = y;
	popSkroll();
	
}

function noScroll()
{
	offset = 0;
	scrolling = -1;
}
 
function popSkroll()
{
	if ( (scrolling == 1)   )
 	{
		
		
		 
		kurOffset = kurOffset + offset;
		
		var limit  = (boxHeight - 255) * -1;
		
		//alert(limit);
		
		if ( ((kurOffset > limit) && (offset<0)) || ((kurOffset < 10) && (offset>0)) )
		{
			kent.style.top = kurOffset+"px";
			setTimeout('popSkroll()',50);
		}
		
		
		
 	}

}