function querywordKeydown(obj) {
    if (event.keyCode==13) {
    	blankSearch();
    }
}

function changeProv(prov) {
	document.SearchForm.province.value = prov;
	document.SearchForm.currentpage.value = "1";
	document.SearchForm.submit();
}

function changePubdate(leftday) {
	document.SearchForm.leftday.value = leftday;
	document.SearchForm.currentpage.value = "1";
	document.SearchForm.submit();

}

function changeField(field) {
	document.SearchForm.field.value = field;
	document.SearchForm.currentpage.value = "1";
	document.SearchForm.submit();

}

function changeChannel(channel) {
	document.SearchForm.channel.value = channel;
	document.SearchForm.currentpage.value = "1";
	document.SearchForm.submit();

}
function changeDisplayStyle(displayStyle) {
	document.SearchForm.displayStyle.value = displayStyle;
	document.SearchForm.submit();

}

function changeSearchType(cla,num) {
	var searchtypes = new Array('zb','xm','yz','jg','zx');
	for ( var id = 1; id <= 5; id++) {
		var MrJins = cla + id;
		var styon = cla + id + "on";
		var styoff = cla + id + "off";
		if (id == num) {
			if(document.getElementById(MrJins) != null)
				document.getElementById(MrJins).className = styon;
		} else {
			if(document.getElementById(MrJins) != null)
				document.getElementById(MrJins).className = styoff;
		}
	}
	if(document.SearchForm.searchtype != null) {
		document.SearchForm.searchtype.value=searchtypes[num-1];
	}
	if(document.SearchForm.queryword.value != "") {
		if(document.SearchForm.channel != null)
			document.SearchForm.channel.value = "";
		if(document.SearchForm.leftday != null)
			document.SearchForm.leftday.value = "";
		if(document.SearchForm.province != null)
			document.SearchForm.province.value = "";
		if(document.SearchForm.currentpage != null)
			document.SearchForm.currentpage.value = "1";
		document.SearchForm.submit();
	}
}

function blankSearch() {
	if(document.SearchForm.queryword == null || document.SearchForm.queryword.value == "" 
		|| document.SearchForm.queryword.value=="请在此输入产品关键词") {
		window.location.href="/search/index.jsp";
	} else {
		if(document.SearchForm.channel != null)
				document.SearchForm.channel.value = "";
		if(document.SearchForm.leftday != null)
			document.SearchForm.leftday.value = "";
		if(document.SearchForm.province != null)
			document.SearchForm.province.value = "";
		if(document.SearchForm.heshi != null)
			document.SearchForm.heshi.value = "";
		if(document.SearchForm.recommend != null)
			document.SearchForm.recommend.value = "";
		if(document.SearchForm.jing != null)
			document.SearchForm.jing.value = "";
		if(document.SearchForm.project != null)
			document.SearchForm.project.value = "";
		if(document.SearchForm.bidfile != null)
			document.SearchForm.bidfile.value = "";
		if(document.SearchForm.currentpage != null)
			document.SearchForm.currentpage.value = "1";
		document.SearchForm.submit();
	}
}