// preload images
var pageReady = false
var imgUp = new Image
var imgDn = new Image

imgUp.src = "images/CDSpecLifted_transp.gif"
imgDn.src = "images/CDSpec_transp.gif"

function checkifReady() {
	if (document.images) { 
		pageReady = true
	}
	else {
		i=i+1
		if ( i<10 ) { setTimeout("checkifReady()",1000) }
	}
}

function toggleImg() {
	if (pageReady) {
		if (document.specDrwing.src == imgUp.src) {
			document.specDrwing.src = imgDn.src
			document.getElementById("toggleText").innerHTML = "Open"
		}
		else {
			document.specDrwing.src = imgUp.src
			document.getElementById("toggleText").innerHTML = "Close"
		}
	}
}