ช่วยดูโค๊ดตรงการค้นหาตามช่วงเวลาให้หน่อยค่ะ ตอนนี้ ติด error อ่ะค่ะ

 <?
		mysql_connect("localhost","root","123456") or die(mysql_error());
		mysql_select_db("gallery");
		$strSQL = "SELECT * FROM picture";
		$objQuery = mysql_query($strSQL);
		$Num_Rows = mysql_num_rows($objQuery);

		if(($album_search!="")&&($start=="")&&($end=="")) {
		$strSQL="SELECT * FROM picture WHERE album_id='$album_search'";
		$objQuery= mysql_query($strSQL) or die("select error=$strSQL");
		  }else if($start!=""&&($end!="")) {
 $strSQL="SELECT * FROM album WHERE date>='$start' AND date<='$end'";
$objQuery= mysql_query($strSQL) or die("select error=$strSQL");
}
		  
	$Num_Rows = mysql_num_rows($objQuery); 
	if($Num_Rows==0){
		
			echo "<font class=\"FontThai\">ไม่พบรูปกิจกรรมที่ค้นหา</font>";
			}
		$Per_Page = 12;   // Per Page

		$Page = $_GET["Page"];
		if(!$_GET["Page"])
		{
			$Page=1;
		}

		$Prev_Page = $Page-1;
		$Next_Page = $Page+1;

		$Page_Start = (($Per_Page*$Page)-$Per_Page);
		if($Num_Rows<=$Per_Page)
		{
			$Num_Pages =1;
		}
		else if(($Num_Rows % $Per_Page)==0)
		{
			$Num_Pages =($Num_Rows/$Per_Page) ;
		}
		else
		{
			$Num_Pages =($Num_Rows/$Per_Page)+1;
			$Num_Pages = (int)$Num_Pages;
		}

		$strSQL .=" order  by FilesID desc LIMIT $Page_Start , $Per_Page";
		$objQuery  = mysql_query($strSQL);


		echo"<table border=\"0\"  cellspacing=\"1\" cellpadding=\"1\"><tr>";
		$intRows = 0;
		while($objResult = mysql_fetch_array($objQuery))
		{
			echo "<td>"; 
			$intRows++;
			$FilesID = $objResult["FilesID"];
			$album_id = $objResult["album_id"];
			$date = $objResult["date"];
	?>