function search(type){
	var obj = document.search_form;
	var search_word = '';
	inputs = obj.getElementsByTagName('input');
	for(var i=0; i < inputs.length; i++){
		if(inputs[i].name == 'search_word'){
			search_word = inputs[i].value;
		}
	}
	if(search_word != ''){
		if(type == 'top'){
			location.href = 'search/' + encodeURI(search_word) + '.html';
		}else{
			location.href = '../search/' + encodeURI(search_word) + '.html';
		}
	}
}