function changeBlue()
{
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	document.getElementById('imgLogo').src="http://www.sznews.com/css/index/logo_blue.jpg";
}
function changeOrange()
{
	document.getElementById('body').className="orangeBody";
	document.getElementById('imgLogo').src="http://www.sznews.com/css/index/logo_orange.jpg";
}
function changeGreen()
{
	document.getElementById('body').className="greenBody";
	document.getElementById('imgLogo').src="http://www.sznews.com/css/index/logo_green.jpg";
}
function changePink()
{
	document.getElementById('body').className="pinkBody";
	document.getElementById('imgLogo').src="http://www.sznews.com/css/index/logo_pink.jpg";
}
function changeGray()
{
	document.getElementById('body').className="grayBody";
	document.getElementById('imgLogo').src="http://www.sznews.com/css/index/logo_gray.jpg";
}