button = new Array();

button['imprint'] 		= new Image(0,0); button['imprint'].src 		= 'http://www.cs.univie.ac.at/images/imprint.gif';

button['nav_projects'] 	= new Image(0,0); button['nav_projects'].src	= 'http://www.cs.univie.ac.at/images/nav_projects.gif';
button['nav_teaching'] 	= new Image(0,0); button['nav_teaching'].src	= 'http://www.cs.univie.ac.at/images/nav_teaching.gif';
button['nav_staff'] 	= new Image(0,0); button['nav_staff'].src 	= 'http://www.cs.univie.ac.at/images/nav_staff.gif';
button['nav_publicat'] 	= new Image(0,0); button['nav_publicat'].src 	= 'http://www.cs.univie.ac.at/images/nav_publicat.gif';
button['nav_events'] 	= new Image(0,0); button['nav_events'].src 	= 'http://www.cs.univie.ac.at/images/nav_events.gif';
button['nav_partners'] 	= new Image(0,0); button['nav_partners'].src	= 'http://www.cs.univie.ac.at/images/nav_partners.gif';
button['nav_aboutus'] 	= new Image(0,0); button['nav_aboutus'].src 	= 'http://www.cs.univie.ac.at/images/nav_aboutus.gif';
button['nav_contact'] 	= new Image(0,0); button['nav_contact'].src 	= 'http://www.cs.univie.ac.at/images/nav_contact.gif';
button['nav_iswi'] 	= new Image(0,0); button['nav_iswi'].src 	= 'http://www.cs.univie.ac.at/images/ext_links/ext_iswi.gif';
button['nav_service'] 	= new Image(0,0); button['nav_service'].src 	= 'http://www.cs.univie.ac.at/images/ext_links/ext_studservice.gif';
button['nav_skripten'] 	= new Image(0,0); button['nav_skripten'].src	= 'http://www.cs.univie.ac.at/images/ext_links/ext_skripten.gif';
button['nav_stud'] 	= new Image(0,0); button['nav_stud'].src 	= 'http://www.cs.univie.ac.at/images/ext_links/ext_studplan.gif';


function preloadImg() {
	button['imprint_over'] = new Image(0,0); button['imprint_over'].src = 'http://www.cs.univie.ac.at/images/imprint_over.gif';
	
	button['nav_projects_over'] 	= new Image(0,0); button['nav_projects_over'].src 	= 'http://www.cs.univie.ac.at/images/nav_projects_over.gif';
	button['nav_teaching_over'] 	= new Image(0,0); button['nav_teaching_over'].src 	= 'http://www.cs.univie.ac.at/images/nav_teaching_over.gif';
	button['nav_staff_over'] 	= new Image(0,0); button['nav_staff_over'].src 		= 'http://www.cs.univie.ac.at/images/nav_staff_over.gif';
	button['nav_publicat_over']	= new Image(0,0); button['nav_publicat_over'].src	= 'http://www.cs.univie.ac.at/images/nav_publicat_over.gif';
	button['nav_events_over'] 	= new Image(0,0); button['nav_events_over'].src 	= 'http://www.cs.univie.ac.at/images/nav_events_over.gif';
	button['nav_partners_over'] 	= new Image(0,0); button['nav_partners_over'].src 	= 'http://www.cs.univie.ac.at/images/nav_partners_over.gif';
	button['nav_aboutus_over'] 	= new Image(0,0); button['nav_aboutus_over'].src 	= 'http://www.cs.univie.ac.at/images/nav_aboutus_over.gif';
	button['nav_contact_over'] 	= new Image(0,0); button['nav_contact_over'].src 	= 'http://www.cs.univie.ac.at/images/nav_contact_over.gif';
	
	button['nav_iswi_over'] 	= new Image(0,0); button['nav_iswi_over'].src 		= 'http://www.cs.univie.ac.at/images/ext_links/ext_iswi_over.gif';
	button['nav_service_over'] 	= new Image(0,0); button['nav_service_over'].src 	= 'http://www.cs.univie.ac.at/images/ext_links/ext_studservice_over.gif';
	button['nav_skripten_over'] 	= new Image(0,0); button['nav_skripten_over'].src	= 'http://www.cs.univie.ac.at/images/ext_links/ext_skripten_over.gif';
	button['nav_stud_over'] 	= new Image(0,0); button['nav_stud_over'].src 		= 'http://www.cs.univie.ac.at/images/ext_links/ext_studplan_over.gif';

}

function swapImg (name, modus) {
	document.images[name].src = (modus ? button[name + '_over'].src : button[name].src);
}

preloadImg();

function checkSearch () {
	var Search = document.getElementById('SearchTerm').value;
	Search = Search.replace(' ', '');
	
	if (Search.length < 2) {
		alert('Geben Sie mindestens 2 Zeichen ein');
		return false;
	}	
	return true;
}

function trim(sString){
	while (sString.substring(0,1) == ' ' || sString.charCodeAt(0)==160){
		sString = sString.substring(1, sString.length);
	}
	while (sString.substring(sString.length-1, sString.length) == ' ' || sString.charCodeAt(sString.length-1)==160){
		sString = sString.substring(0,sString.length-1);
	}
	return sString;
}