/** 
 * Png fix
 */


var arVersion = navigator.appVersion.split("MSIE")
var version = parseFloat(arVersion[1])


function fixPNG(myImage) 
{
    if ((version >= 5.5) && (version < 7) && (document.body.filters)) 
    {
       var imgID = (myImage.id) ? "id='" + myImage.id + "' " : ""
	   var imgClass = (myImage.className) ? "class='" + myImage.className + "' " : ""
	   var imgTitle = (myImage.title) ? 
		             "title='" + myImage.title  + "' " : "title='" + myImage.alt + "' "
	   var imgStyle = "display:inline-block;" + myImage.style.cssText
	   var strNewHTML = "<span " + imgID + imgClass + imgTitle
                  + " style=\"" + "width:" + myImage.width 
                  + "px; height:" + myImage.height 
                  + "px;" + imgStyle + ";"
                  + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
                  + "(src=\'" + myImage.src + "\', sizingMethod='scale');\"></span>"
	   myImage.outerHTML = strNewHTML	  
    }
}

/**
 * This script will vertical align the age check buttons even on window resize
 * @return
 */


function getWindowHeight() {
	var windowHeight = 0;
	if (typeof(window.innerHeight) == 'number') {
		windowHeight = window.innerHeight;
	}
	else {
		if (document.documentElement && document.documentElement.clientHeight) {
			windowHeight = document.documentElement.clientHeight;
		}
		else {
			if (document.body && document.body.clientHeight) {
				windowHeight = document.body.clientHeight;
			}
		}
	}
	return windowHeight;
}
		
function setContent() {
	if (document.getElementById) {
	var windowHeight = getWindowHeight();
		if (windowHeight > 0) {
		var contentElement = document.getElementById('agecheck');
		var contentHeight = contentElement.offsetHeight;
			if (windowHeight - contentHeight > 0) {
				contentElement.style.position = 'relative';
				contentElement.style.top = ((windowHeight / 2) - (contentHeight / 2)) + 'px';
				contentElement.style.display = 'block';
			}
			else {
				contentElement.style.position = 'static';
			}
		}
	}
}


function prepareResources() {	
	var _logopng = document.getElementById('logo'); 
	var yes = document.getElementById('yes-btn');	
	fixPNG(_logopng);
	setContent();		
	addEvent(window, "resize", setContent);
}


init(prepareResources);