function openPKP() {
    popupWin = window.open('http://www.pkp.ubc.ca/harvester/search.php');
}

function searchPKP(searchString) {
		if (document.searchForm.search_harvester.checked) {
			popupWin = window.open('http://www.pkp.ubc.ca/harvester/search.php?query='+searchString);
		}else{
			document.searchForm.submit();
		}	
}

function advancedSearchPKP() {
var selectBox;

		if (document.searchForm.search_harvester.checked) {
			var query="";
		
			if (document.searchForm.query.value!="") query = "query="+document.searchForm.query.value;
		
			if(document.searchForm.query_author.value!="")
				if (query!="") query = query + "&query_author="+document.searchForm.query_author.value;
				else query = query + "query_author="+document.searchForm.query_author.value;

			if(document.searchForm.query_title.value!="")
				if (query!="") query = query + "&query_title="+document.searchForm.query_title.value;
				else query = query + "query_title="+document.searchForm.query_title.value;
					
			if(document.searchForm.query_discipline.value!="")
				if (query!="") query = query + "&query_discipline="+document.searchForm.query_discipline.value;
				else query = query + "query_discipline="+document.searchForm.query_discipline.value;
					
			if(document.searchForm.query_topics.value!="")
				if (query!="") query = query + "&query_topics="+document.searchForm.query_topics.value;
				else query = query + "query_topics="+document.searchForm.query_topics.value;
					
			if(document.searchForm.query_approach.value!="")
				if (query!="") query = query + "&query_approach="+document.searchForm.query_approach.value;
				else query = query + "query_approach="+document.searchForm.query_approach.value;

			if(document.searchForm.query_coverage.value!="")
				if (query!="") query = query + "&query_coverage="+document.searchForm.query_coverage.value;
				else query = query + "query_coverage="+document.searchForm.query_coverage.value;						
		
		
			if (query!="") {
				var selectBox = document.searchForm.query_type;
				query = query+"&query_type="+selectBox.options[selectBox.selectedIndex].value;
			}
			
			if(document.searchForm.query_date_from_year.value!="" && document.searchForm.query_date_from_month.value!="" && document.searchForm.query_date_from_day.value!="" )
				if (query!="") query = query + "&query_date_from="+document.searchForm.query_date_from_year.value+"-"+document.searchForm.query_date_from_month.value+"-"+document.searchForm.query_date_from_day.value;
				else query = query + "query_date_from="+document.searchForm.query_date_from_year.value+"-"+document.searchForm.query_date_from_month.value+"-"+document.searchForm.query_date_from_day.value;
				
			if(document.searchForm.query_date_to_year.value!="" && document.searchForm.query_date_to_month.value!="" && document.searchForm.query_date_to_day.value!="" )
				if (query!="") query = query + "&query_date_to="+document.searchForm.query_date_to_year.value+"-"+document.searchForm.query_date_to_month.value+"-"+document.searchForm.query_date_to_day.value;
				else query = query + "query_date_to="+document.searchForm.query_date_to_year.value+"-"+document.searchForm.query_date_to_month.value+"-"+document.searchForm.query_date_to_day.value;
	
			if (query!="") {
				if(document.searchForm.matchAll.checked)
					query = query + "&match=all";
		
				query = query + "&search=advanced&is_search=1";
			}					
		
			popupWin = window.open('http://www.pkp.ubc.ca/harvester/search.php?'+query);
		}else{
			document.searchForm.submit();
		}	
}