function rollover(obj) {
	var str = obj.id + "Button";
	var imgObj=document.getElementById(str);
	var roHeader=document.getElementById("roHeader");
	var imgSrc = imgObj.src;
	
	
	
	if (imgSrc.indexOf("_on") == -1) {
	    if(obj.id == "signinLink" || obj.id == "healthysolonselectLink")
	    {
	        roHeader.src = "images/HomeTopImage"  + ".jpg"; 
	    }else{
	        roHeader.src = "images/" + obj.id + "_homero.jpg"; 
	    }
		imgObj.src = imgSrc.replace("_off", "_on");
	} else {
			roHeader.src = "images/HomeTopImage.jpg";
    	imgObj.src = imgSrc.replace("_on", "_off");
	}
}