// expand/collapse div

function switchMenu(obj, obj2) {
	var el = document.getElementById(obj); // the hidden div
	var el2 = document.getElementById(obj2); // the plus/minus button
	if(el.style.display != "block") {
		el.style.display = "block";
		el2.src = "/images/minus.gif";
	}
	else {
		el.style.display = "none";
		el2.src = "/images/plus.gif";
	}
	// resize the left column
	setNavHeight();
}

//-----------------------------------------------
//used in the Eval Form for showing and hiding the
//"if no give us more information" questions - aleah
function showQuestion(obj){
    var el = document.getElementById(obj);
    if(el.style.display != "block") {
        el.style.display = "block";   
    }
	// resize the left column
	setNavHeight();
}

function hideQuestion(obj){
    var el = document.getElementById(obj);
    if(el.style.display != "none"){
        el.style.display = "none";
    }
	// resize the left column
	setNavHeight();
}
//--------------------------------------------------

// resize subnav to match page height minus closing shadow

function setNavHeight() {
    if (document.getElementById('leftnav'))
    {
	    a = document.getElementById('leftnav');
	    b = document.getElementById('content_display').offsetHeight;
	    b = b-10;
	    if (b > 350)
	        a.style.height = b+'px';
	    else 
	        a.style.height = 360+'px';
	}
}