var back_button0
var back_button1

// load images
function LoadBackButton()
{
	if (document.images)
	{
		back_button0 = new Image
		back_button0.src = "../images/buttons/back0.gif"

		back_button1 = new Image
		back_button1.src = "../images/buttons/back1.gif"

		document.back_button.src = back_button0.src
	}
}

function ImageOver(image_id)
{
	eval('document.images.'+image_id+'.src = '+image_id+'1.src')
}

function ImageOut(image_id)
{
	eval('document.images.'+image_id+'.src = '+image_id+'0.src')
}