function $(id){
	return document.getElementById(id);
}

var auto_content_height = function(){
	var rHeight = $("div_right").scrollHeight;
	var lHeight = 0;
	var lMod = ["login","search","contact","exhibit"];
	for(var i = 0;i < lMod.length - 1;i++){
		lHeight += $("div_left_" + lMod[i]).scrollHeight + 15;
	}
	var h = rHeight - lHeight - 15;
	var hHeight = $("div_left_" + lMod[i]).scrollHeight;
	if(h > hHeight){
		$("div_left_" + lMod[i]).style.height = h + "px";
	}
	if(h < hHeight){
		try{
			if(rMod.length > 0){
				$("div_right_" + rMod[0]).style.height = (lHeight + hHeight) + "px";
			}
		}catch(e){
			
		}
	}
};

var search_images = function(form){
	var keyword = form.keyword.value;
	if(keyword != ""){
		keyword = encodeURIComponent(keyword);
		location.href = [base_url,"search","/",keyword,"/1"].join("");
	}
	return false;
};

var research_images = function(form){
	var keyword = new Array();
	for(var i = 0;i < form.elements.length;i++){
		if(form.elements[i].type == "checkbox"){
			if(form.elements[i].checked){
				keyword.push(form.elements[i].value);
			}
		}
	}
	if(keyword.length){
		keyword = keyword.join(" ");
		keyword = encodeURIComponent(keyword);
		//alert(keyword);
		location.href = [base_url,"search","/",keyword,"/1"].join("");
	}
	return false;
};

var goto_page = function(form,path){
	var page = parseInt(form.page.value);
	location.href = [base_url,path,"/",page].join("");
	return false;
};