// Tab functions
function toggleProgramme() {
	var d = document; {
		document.getElementById('tabContentProgramme').style.display = "block";
		document.getElementById('tabContentInstitution').style.display = "none";
		document.getElementById('tabContentAdvanced').style.display = "none";
                document.getElementById('tabContentGeo').style.display = "none";
		document.getElementById('searchProgramme').className = 'hi';
		document.getElementById('searchInstitution').className = '';		
		document.getElementById('searchAdvanced').className = '';
                document.getElementById('searchGeo').className = '';
		if ($('search_programme_term_error')) {
			$('search_programme_term_error').hide();
		}
		if ($('search_institution_term_error')) {
			$('search_institution_term_error').hide();
		}
	} 
}
function toggleInstitution() {
	var d = document; {
		document.getElementById('tabContentProgramme').style.display = "none";
		document.getElementById('tabContentInstitution').style.display = "block";
		document.getElementById('tabContentAdvanced').style.display = "none";
                document.getElementById('tabContentGeo').style.display = "none";
		document.getElementById('searchProgramme').className = '';
		document.getElementById('searchInstitution').className = 'hi';		
		document.getElementById('searchAdvanced').className = '';
                document.getElementById('searchGeo').className = '';
		$('search_institution_term_error').hide();
		$('search_programme_term_error').hide();
	} 
}
function toggleAdvanced() {
	var d = document; {
		document.getElementById('tabContentProgramme').style.display = "none";
		document.getElementById('tabContentInstitution').style.display = "none";
		document.getElementById('tabContentAdvanced').style.display = "block";
                document.getElementById('tabContentGeo').style.display = "none";
		document.getElementById('searchProgramme').className = '';
		document.getElementById('searchInstitution').className = '';		
		document.getElementById('searchAdvanced').className = 'hi';
                document.getElementById('searchGeo').className = '';
	} 
}
function toggleGeo() {
	var d = document; {
		document.getElementById('tabContentProgramme').style.display = "none";
		document.getElementById('tabContentInstitution').style.display = "none";
		document.getElementById('tabContentAdvanced').style.display = "none";
                document.getElementById('tabContentGeo').style.display = "block";
		document.getElementById('searchProgramme').className = '';
		document.getElementById('searchInstitution').className = '';
		document.getElementById('searchAdvanced').className = '';
                document.getElementById('searchGeo').className = 'hi';
	}
}

function toggleSheet1() {
	var d = document; {
		document.getElementById('tabContentSheet1').style.display = "block";
		document.getElementById('tabContentSheet2').style.display = "none";
		document.getElementById('tabContentSheet3').style.display = "none";
		document.getElementById('tabContentSheet4').style.display = "none";
                document.getElementById('tabContentSheet5').style.display = "none";
		document.getElementById('sheet1').className = 'hi';
		document.getElementById('sheet2').className = '';		
		document.getElementById('sheet3').className = '';
		document.getElementById('sheet4').className = '';
                document.getElementById('sheet5').className = '';

	} 
}
function toggleSheet2() {
	var d = document; {
		document.getElementById('tabContentSheet1').style.display = "none";
		document.getElementById('tabContentSheet2').style.display = "block";
		document.getElementById('tabContentSheet3').style.display = "none";
		document.getElementById('tabContentSheet4').style.display = "none";
                document.getElementById('tabContentSheet5').style.display = "none";
		document.getElementById('sheet1').className = '';
		document.getElementById('sheet2').className = 'hi';		
		document.getElementById('sheet3').className = '';
		document.getElementById('sheet4').className = '';
                document.getElementById('sheet5').className = '';
	} 
}
function toggleSheet3() {
	var d = document; {
		document.getElementById('tabContentSheet1').style.display = "none";
		document.getElementById('tabContentSheet2').style.display = "none";
		document.getElementById('tabContentSheet3').style.display = "block";
		document.getElementById('tabContentSheet4').style.display = "none";
                document.getElementById('tabContentSheet5').style.display = "none";
		document.getElementById('sheet1').className = '';
		document.getElementById('sheet2').className = '';		
		document.getElementById('sheet3').className = 'hi';
		document.getElementById('sheet4').className = '';
                document.getElementById('sheet5').className = '';
	} 
}
function toggleSheet4() {
	var d = document; {
		document.getElementById('tabContentSheet1').style.display = "none";
		document.getElementById('tabContentSheet2').style.display = "none";
		document.getElementById('tabContentSheet3').style.display = "none";
		document.getElementById('tabContentSheet4').style.display = "block";
                document.getElementById('tabContentSheet5').style.display = "none";
		document.getElementById('sheet1').className = '';
		document.getElementById('sheet2').className = '';		
		document.getElementById('sheet3').className = '';
		document.getElementById('sheet4').className = 'hi';
                document.getElementById('sheet5').className = '';
  
	} 
}
function toggleSheet5() {
	var d = document; {
		document.getElementById('tabContentSheet1').style.display = "none";
		document.getElementById('tabContentSheet2').style.display = "none";
		document.getElementById('tabContentSheet3').style.display = "none";
		document.getElementById('tabContentSheet4').style.display = "none";
                document.getElementById('tabContentSheet5').style.display = "block";
		document.getElementById('sheet1').className = '';
		document.getElementById('sheet2').className = '';
		document.getElementById('sheet3').className = '';
		document.getElementById('sheet4').className = '';
                document.getElementById('sheet5').className = 'hi';
	}
}

function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

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 expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);


function validateSearchTerm(formname) {
                 
		//get the value of the search term 
		var kw = 'keywords_find_programme';
		if(formname != 'findaprogrammeform') {
				kw = 'keywords_find_institution' ;
		} 
		if($F(kw).length < 1 || $F(kw) == '' ){
			if(formname == 'findaprogrammeform') {
				$('search_programme_term_error').show();
			} else {
				$('search_institution_term_error').show();
			}
			//$('keywords_find_programme').setStyle({backgroundColor: '#EEF9FE'});	
		}else {
			if(formname == 'findaprogrammeform') {
			  	document.findaprogrammeform.submit();
			}else {
				document.findaninstitutionform.submit();
			}
		}	
}