// open/close survey
function openSurvey(obj) {
	var el = document.getElementById(obj);
	if ( el.style.display != "none" ) {
		el.style.display = 'none';
	}
	else {
	el.style.display = '';
	// el.innerHTML = '<iframe height="350" frameborder="0" scrolling="no" style="width:100%;border:none;" src="https://uscweb.wufoo.com/embed/help-us-improve-the-its-website" title="HTML Form" name="frame_survey"></iframe><p><a onclick="closeSurvey(\'survey_wrap\');" class="close">close survey</a></p>';
	el.innerHTML = '<iframe height="600" frameborder="0" scrolling="no" style="width:90%;border:none;" src="https://uscweb.wufoo.com/forms/s7x1a3/" title="HTML Form" name="frame_survey"></iframe><p><a onclick="closeSurvey(\'survey_wrap\');" class="close">close survey</a></p>';

		}
}

function closeSurvey(obj) {
	var el = document.getElementById(obj);
	if ( el.style.display != "none" ) {
		el.style.display = 'none';
	}
	else {
		el.style.display = '';
	}
	createCookie('its_survey','no',180);
}

function temp_closeSurvey(obj) {
	var el = document.getElementById(obj);
	el.style.display = 'none';
	createCookie('its_survey','no',1);
}

//cookie stuff
function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  } else {
    var expires = "";
  }
  document.cookie = name+"="+value+expires+"; domain=usc.edu; path=/";
}

function readCookie(name) {
  var ca = document.cookie.split(';');
  
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];

    // Trim left
    while (c.charAt(0)==' ') {
      c = c.substring(1,c.length);
    }
    if (c.indexOf(name) == 0) {
      // return without the leading =
      return c.substring(name.length+1,c.length);
    }
  }
  return null;
}

function eraseCookie(name) {
  createCookie(name,"",-1);
}



function initPage() {

show_survey = readCookie('its_survey');  
	if (show_survey != 'no') {
	document.getElementById('survey_wrap').style.display = "block";
		} 
	else if (show_survey == 'no') {
		} 
}