/* Function for showing and hiding elements that use 'display:none' to hide */
function toggleDisplay(targetId)
{
    if (document.getElementById) {
        target = document.getElementById(targetId);
    	if (target.style.display == "none"){
    		target.style.display = "";
    	} else {
    		target.style.display = "none";
    	}
    }
}