function change_nav(strName){
	if(document.body.id != strName)
	{
		document.getElementById("nav" + strName).style.backgroundColor="#7279be";
		document.getElementById("nav" + strName + "tlong").style.backgroundColor="#7279be";
		document.getElementById("nav" + strName + "blong").style.backgroundColor="#7279be";
		document.getElementById("nav" + strName + "tshort").style.backgroundImage="url(images/onnavtop.gif)";
		document.getElementById("nav" + strName + "bshort").style.backgroundImage="url(images/onnavbot.gif)";
	}
}

function change_nav_back(strName){
	if(document.body.id != strName)
	{
		document.getElementById("nav" + strName).style.backgroundColor="#2f3563";
		document.getElementById("nav" + strName + "tlong").style.backgroundColor="#2f3563";
		document.getElementById("nav" + strName + "blong").style.backgroundColor="#2f3563";
		document.getElementById("nav" + strName + "tshort").style.backgroundImage="url(images/offnavtop.gif)";
		document.getElementById("nav" + strName + "bshort").style.backgroundImage="url(images/offnavbot.gif)";
	}

}