function preloadImages()
{
	if (document.images)
	{
		wus1=new Image(100, 100);
		ppm2=new Image(100, 100);
		wtc3=new Image(100, 100);
		pat4=new Image(100, 100);
	}
}

function swapImage(name, src) {
	I = document.getElementById(name);
	I.src = src;
}

/*
function iemode()
{
	var mode=document.compatMode, m;
	if(mode)
	{
		if(mode=='BackCompat')
			m='quirks';
		else if(mode=='CSS1Compat')
			m='Standards Compliance';
		else
			m='Almost Standards Compliance';
		alert('The document is being rendered in '+m+' mode.');
	}
	else
		alert('docment.compatMode is undefined.');
}

/* */