function ShowHideSection(sectionName) {
    //alert(sectionName);
    var section = document.getElementById(sectionName);
    if (!section) {
        alert('element not found');
        return;
    }
    var isDisplayed = section.style.display != "none";
    if (isDisplayed) {
        section.style.display = "none";
    }
    else {
        section.style.display = "block";
    }
}

function swapImage(idName) {
	var onIDName = idName + "On";
	if (document.getElementById(idName)) {
		document.getElementById(idName).id = onIDName;
	} else {
		document.getElementById(onIDName).id = idName;
	}
}

function swapTabs(idName) {
	if (document.getElementById('gradsTabOn')) {
		document.getElementById('gradsTabOn').id = 'gradsTab';
		document.getElementById('gradsTabContent').style.display = 'none';
		document.getElementById('gradsTabContentText').style.display = 'none';
	}

	if (document.getElementById('underGradsTabOn')) {
		document.getElementById('underGradsTabOn').id = 'underGradsTab';
		document.getElementById('underGradsTabContent').style.display = 'none';
		document.getElementById('underGradsTabContentText').style.display = 'none';
	}

	if (document.getElementById('parentsTabOn')) {
		document.getElementById('parentsTabOn').id = 'parentsTab';
		document.getElementById('parentsTabContent').style.display = 'none';
		document.getElementById('parentsTabContentText').style.display = 'none';
	}

	if (document.getElementById('recentGradsTabOn')) {
		document.getElementById('recentGradsTabOn').id = 'recentGradsTab';
		document.getElementById('recentGradsTabContent').style.display = 'none';
		document.getElementById('recentGradsTabContentText').style.display = 'none';
	}

	var onIDName = idName + "On";
	var onContentName = idName + "Content";
	var onContentTextName = idName + "ContentText";
	
	if (document.getElementById(idName)) {
		document.getElementById(idName).id = onIDName;
		document.getElementById(onContentName).style.display = 'block';
		document.getElementById(onContentTextName).style.display = 'block';
	} else {
		document.getElementById(onIDName).id = idName;
		document.getElelmentById(onContentName).style.display = 'none';
		document.getElelmentById(onContentTextName).style.display = 'none';
	}


}

function resetNav() {
	if (document.getElementById('gradMenu')) {
		document.getElementById('gradMenu').style.display = 'none';
	}

	if (document.getElementById('underGradMenu')) {
		document.getElementById('underGradMenu').style.display = 'none';
	}

	if (document.getElementById('parentMenu')) {
		document.getElementById('parentMenu').style.display = 'none';
	}

	if (document.getElementById('finAidMenu')) {
		document.getElementById('finAidMenu').style.display = 'none';
	}

	if (document.getElementById('menuGraduateButtonOn')) {
		document.getElementById('menuGraduateButtonOn').id = 'menuGraduateButton';
	}

	if (document.getElementById('menuUnderGradButtonOn')) {
		document.getElementById('menuUnderGradButtonOn').id = 'menuUnderGradButton';
	}

	if (document.getElementById('menuParentButtonOn')) {
		document.getElementById('menuParentButtonOn').id = 'menuParentButton';
	}

	if (document.getElementById('menuFinAidButtonOn')) {
		document.getElementById('menuFinAidButtonOn').id = 'menuFinAidButton';
	}

}

function navOn(menuButtonName, menuName) {
	resetNav();
	var onButtonName = menuButtonName + "On";
	if (document.getElementById(menuButtonName)) {
		document.getElementById(menuButtonName).id = onButtonName;
	}

	//if(document.getElementById(menuName)) {
	//document.getElementById(menuName).style.display='block';
	//}
}


function getURLVar(urlVarName) {
	var urlHalves = String(document.location).split('?');
	var urlVarValue = '';
	if (urlHalves[1]) {
		var urlVars = urlHalves[1].split('&');
		for (var i = 0; i <= (urlVars.length); i++) {
			if (urlVars[i]) {
				var urlVarPair = urlVars[i].split('=');
				if (urlVarPair[0] && urlVarPair[0].toLowerCase() == urlVarName.toLowerCase()) {
					urlVarValue = urlVarPair[1];
				}
			}
		}
	}
	return urlVarValue;
}

function whatTab() {
	var theParamValue = getURLVar('tab');
	
	if (theParamValue == 'Graduates') {
		swapTabs('gradsTab');
	} else if (theParamValue == 'UnderGraduates') {
		swapTabs('underGradsTab');
	} else if (theParamValue == 'Parents') {
		swapTabs('parentsTab');
	} else if (theParamValue == 'RecentGraduates') {
		swapTabs('recentGradsTab');
	} else {
		swapTabs('gradsTab');
	}
}