// JavaScript Document
function detectPngFormat()
{
	// if IE5.5+ on Win32, then display PNGs with AlphaImageLoader
	if ((browser.isIE55 || browser.isIE6up) && browser.isWin32) 
	{
		return "filter";
	// else, if the browser can display PNGs normally, then do that
	}
	else if ((browser.isGecko) || (browser.isIE5up && browser.isMac) || (browser.isOpera && browser.isWin && browser.versionMajor >= 6) || (browser.isOpera && browser.isUnix && browser.versionMajor >= 6) || (browser.isOpera && browser.isMac && browser.versionMajor >= 5) || (browser.isOmniweb && browser.versionMinor >= 3.1) || (browser.isIcab && browser.versionMinor >= 1.9) || (browser.isWebtv) || (browser.isDreamcast)) 
	{
		return "pngNormal";
	}
}

function setPng()
{
	if(detectPngFormat() == "filter")
	{
		document.getElementById("headerImage").style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='/images/_global/headerImage.png', sizingMethod='scale')";
		document.getElementById("headerImage").style.background = "none";
		
		
		document.getElementById("transpImage").style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='/images/_global/headTransparent.png', sizingMethod='scale')";
		document.getElementById("transpImage").style.background = "none";
		
	}
	if(detectPngFormat() == "pngNormal")
	{
		document.getElementById("headerImage").style.background = "url(/images/_global/headerImage.png)";
		
		document.getElementById("transpImage").style.background = "url(/images/_global/headTransparent.png)";
	}
	else
	{
		document.getElementById("headerImage").style.background = "url(/images/_global/headerImage.gif)";
		
		document.getElementById("transpImage").style.background = "url(/images/_global/headTransparent.gif)";
	}
}