/* Preload any images here */

arImageSrc = new Array (
	"btn-home-on.gif",
	"btn-ourstaff-on.gif",
	"btn-services-on.gif",
	"btn-questionnaire-on.gif",
	"btn-clinics-on.gif",
	"btn-links-on.gif",
	"btn-contact-on.gif"
)

function preloadem(){
	arImageList = new Array ();
	sDirectory = "/images/";

	for (counter in arImageSrc) {
		arImageList[counter] = new Image();
        	arImageList[counter].src = sDirectory + arImageSrc[counter];
    	}
}

/* This function does the actual image rollover */

function changeIt(oImage){
	var sSrc = oImage.src;
	var iUnderscore = sSrc.lastIndexOf("-");
	var iDot = sSrc.lastIndexOf(".");
	var sState = sSrc.slice(iUnderscore, iDot);
	var sNewImg = sSrc.slice(0, iUnderscore);
	var sExtension = sSrc.slice(iDot);
	if(sState == "-off")
	{
		sNewImg = sNewImg + "-on" + sExtension;
		eval(oImage).src = sNewImg;
	}
	else
	{
		sNewImg = sNewImg + "-off" + sExtension;
		eval(oImage).src = sNewImg;
	}
	
}