function search() {
	var input = document.getElementById('keyword');
	var k = input.value;
	if (k != '' && k != '请输入关键字') {
		k = encodeURIComponent(k);
		document.getElementById('searchForm').action = "/key/" + k + "/";
		document.getElementById('searchForm').submit();
	} else {
		alert('请输入关键字');
	}
	return false;
}

function validateInput(event) {
	if(event.keyCode == 37 || event.keyCode == 39){
		return;
	}
	var input = document.getElementById('keyword');
	var val = input.value;
	var end = val.replace(/(^[\-|\&|\+|\s])|[\^|!|~|\(|\)|\{|\}|\[|\]]/g, '');
	input.value = end;
}

function changeFontSize(size){
	var artCon = document.getElementById("artCon").style.fontSize=size+"px";
}