<?php
			$sv_name = "";
			$username = "";
			$password = "";
			$db_name = "";
            $con = mysql_connect($sv_name, $username, $password) or die(mysql_error());
            mysql_select_db($db_name, $con) or die(mysql_error());

			$jsType = $_GET['typeid'];
			$jsSub1 = $_GET['subid1'];
			$jsSub2 = $_GET['subid2'];
			$jsSub3 = $_GET['subid3'];
			$jsSub4 = $_GET['subid4'];
			$sub1 = $_GET['si1'];
			$sub2 = $_GET['si2'];
			$sub3 = $_GET['si3'];
			$sub4 = $_GET['si4'];

			$subs1 = array();
			$subs2 = array();
			$subs3 = array();
			$subs4 = array();

			for ($i=0; $i<100; $i++) {
				$subs1[$i] = -1;
				$subs2[$i] = -1;
				$subs3[$i] = -1;
				$subs4[$i] = -1;
			}


			if ($jsType == 2 && $sub1 > 0) {
				$atlast = 1;
			}

			else if (($jsType == 1 || $jsType == 3) && $sub2 > 0) {
				$atlast = 1;
			}

			else if ($jsType == 4 && $sub1 > 0) {
				$atlast = 1;
			}

			else {
				$atlast = 0;
			}

			echo "

				lvl = document.uniform.level.value;

				si1 = document.uniform.subject1.selectedIndex;
				si2 = document.uniform.subject2.selectedIndex;
				si3 = document.uniform.subject3.selectedIndex;
				si4 = document.uniform.subject4.selectedIndex;
			";

				$pages_table_name = "uni_combinations";
				$query_subjects = "SELECT * FROM " . $pages_table_name;
				$result_subjects = mysql_query($query_subjects, $con) or die(mysql_error());


				while($row_subjects = mysql_fetch_array($result_subjects))
				{

					if (
					$jsType == $row_subjects['typeid'] &&
					(

					($jsSub1 == $row_subjects['subid1'] || $jsSub1 == 0)
					&&
					($jsSub2 == $row_subjects['subid2'] || $jsSub2 == 0)
					&&
					($jsSub3 == $row_subjects['subid3'] || $jsSub3 == 0)
					&&
					($jsSub4 == $row_subjects['subid4'] || $jsSub4 == 0)

					)
					)
					{
						if ($atlast == 1) {
							if ($subs2[$row_subjects['subid2']] != $row_subjects['subid2']) {
								echo "
									document.uniform.subject2.options[".$row_subjects['subid2']."].disabled = true;
									document.uniform.subject2.options[".$row_subjects['subid2']."].style.display = 'none';
								";
								$subs2[$row_subjects['subid2']] = $row_subjects['subid2'];
							}
							if ($subs3[$row_subjects['subid3']] != $row_subjects['subid3']) {
								echo "
									document.uniform.subject3.options[".$row_subjects['subid3']."].disabled = true;
									document.uniform.subject3.options[".$row_subjects['subid3']."].style.display = 'none';
								";
								$subs3[$row_subjects['subid3']] = $row_subjects['subid3'];
							}
							if ($subs4[$row_subjects['subid4']] != $row_subjects['subid4']) {
								echo "
									document.uniform.subject4.options[".$row_subjects['subid4']."].disabled = true;
									document.uniform.subject4.options[".$row_subjects['subid4']."].style.display = 'none';
								";
								$subs4[$row_subjects['subid4']] = $row_subjects['subid4'];
							}
						}

					}
				}

	?>