function memselector(){

memselector="<table width='200'>";
    memselector+="<tr>";
        memselector+="<td bgcolor='#E5E5E5' width='194'><font size='2' face='Arial'><input type='radio' id='ddr2' name='mem' onclick='create_ddrr()'><a href='#' onclick='create_ddrr()'>DDR2</a></font></td>";
    memselector+="</tr>";
    memselector+="<tr>";
        memselector+="<td bgcolor='#E5E5E5' width='194'><font size='2' face='Arial'><input type='radio' id='ddr' name='mem' onclick='create_ddr()'><a href='#' onclick='create_ddr()'>DDR</a></font></td>";
    memselector+="</tr>";
    //memselector+="<tr>";
   //     memselector+="<td bgcolor='#E5E5E5' width='194'><font size='2' face='Arial'><input type='radio' id='sdram' name='mem' onclick='create_sdram()'>SDRAM</font></td>";
   // memselector+="</tr>";
    memselector+="<tr>";
        memselector+="<td bgcolor='#E5E5E5' width='194'><font size='2' face='Arial'><input type='radio' id='rambus' name='mem' onclick='create_rambus()'><a href='#' onclick='create_rambus()'>RAMBUS</a> &nbsp;&nbsp;&nbsp;&nbsp;</font><span id='showall' style='visibility:hidden'><font size='1' face='Arial'>Show All</font><font size='2' face='Arial'><input type='checkbox' id='expAll' name='s' onclick='show()' checked='true'></font></span></td>";
    memselector+="</tr>";
    memselector+="<tr>";
        memselector+="<td width='194'>";

	memselector+="<span id='sr'>";
            memselector+="<script language='JavaScript'>create_ddrr();</script>";
			
	memselector+="</span>";
        memselector+="</td>";
    memselector+="</tr>";
    
    
    /*memselector+="<tr>";
                    memselector+="<td bgcolor='#030082' width='194' colspan='2' height='26'>"
                        memselector+="<p align='center'><font size='2' face='Arial' color='white'><b>Helpful Links</b></font></p>";
                    memselector+="</td>";
                memselector+="</tr>";*/
memselector+="</table>";
document.getElementById("memselect").innerHTML=memselector;

}
function SDMenu(id) {
	if (!document.getElementById || !document.getElementsByTagName)
		return false;
	this.menu = document.getElementById(id);
	this.submenus = this.menu.getElementsByTagName("div");
	this.remember = true;
	this.speed = 3;
	this.markCurrent = true;
	this.oneSmOnly = false;
}
SDMenu.prototype.init = function() {
	var mainInstance = this;
	for (var i = 0; i < this.submenus.length; i++)
		this.submenus[i].getElementsByTagName("span")[0].onclick = function() {
			mainInstance.toggleMenu(this.parentNode);
		};
	if (this.markCurrent) {
		var links = this.menu.getElementsByTagName("a");
		for (var i = 0; i < links.length; i++)
			if (links[i].href == document.location.href) {
				links[i].className = "current";
				break;
			}
	}
	if (this.remember) {
		var regex = new RegExp("sdmenu_" + encodeURIComponent(this.menu.id) + "=([01]+)");
		var match = regex.exec(document.cookie);
		if (match) {
			var states = match[1].split("");
			for (var i = 0; i < states.length; i++)
				this.submenus[i].className = (states[i] == 0 ? "collapsed" : "");
		}
	}
};
SDMenu.prototype.toggleMenu = function(submenu) {
	if (submenu.className == "collapsed")
		this.expandMenu(submenu);
	else
		this.collapseMenu(submenu);
};
SDMenu.prototype.expandMenu = function(submenu) {
	var fullHeight = submenu.getElementsByTagName("span")[0].offsetHeight;
	var links = submenu.getElementsByTagName("a");
	for (var i = 0; i < links.length; i++)
		fullHeight += links[i].offsetHeight;
	var moveBy = Math.round(this.speed * links.length);
	
	var mainInstance = this;
	var intId = setInterval(function() {
		var curHeight = submenu.offsetHeight;
		var newHeight = curHeight + moveBy;
		if (newHeight < fullHeight)
			submenu.style.height = newHeight + "px";
		else {
			clearInterval(intId);
			submenu.style.height = "";
			submenu.className = "";
			mainInstance.memorize();
		}
	}, 30);
	this.collapseOthers(submenu);
};
SDMenu.prototype.collapseMenu = function(submenu) {
	var minHeight = submenu.getElementsByTagName("span")[0].offsetHeight;
	var moveBy = Math.round(this.speed * submenu.getElementsByTagName("a").length);
	var mainInstance = this;
	var intId = setInterval(function() {
		var curHeight = submenu.offsetHeight;
		var newHeight = curHeight - moveBy;
		if (newHeight > minHeight)
			submenu.style.height = newHeight + "px";
		else {
			clearInterval(intId);
			submenu.style.height = "";
			submenu.className = "collapsed";
			mainInstance.memorize();
		}
	}, 30);
};
SDMenu.prototype.collapseOthers = function(submenu) {
	if (this.oneSmOnly) {
		for (var i = 0; i < this.submenus.length; i++)
			if (this.submenus[i] != submenu && this.submenus[i].className != "collapsed")
				this.collapseMenu(this.submenus[i]);
	}
};
SDMenu.prototype.expandAll = function() {
	var oldOneSmOnly = this.oneSmOnly;
	this.oneSmOnly = false;
	for (var i = 0; i < this.submenus.length; i++)
		if (this.submenus[i].className == "collapsed")
			this.expandMenu(this.submenus[i]);
	this.oneSmOnly = oldOneSmOnly;
};
SDMenu.prototype.collapseAll = function() {
	for (var i = 0; i < this.submenus.length; i++)
		if (this.submenus[i].className != "collapsed")
			this.collapseMenu(this.submenus[i]);
};
SDMenu.prototype.memorize = function() {
	if (this.remember) {
		var states = new Array();
		for (var i = 0; i < this.submenus.length; i++)
			states.push(this.submenus[i].className == "collapsed" ? 0 : 1);
		var d = new Date();
		d.setTime(d.getTime() + (30 * 24 * 60 * 60 * 1000));
		document.cookie = "sdmenu_" + encodeURIComponent(this.menu.id) + "=" + states.join("") + "; expires=" + d.toGMTString() + "; path=/";
	}
};


var myMenu;

	function create_ddrr(){		
		document.getElementById("sr").innerHTML="<div style='float:left;' id='my_menu' class='sdmenu'><div><span style='cursor:pointer'>Memory Speed</span><a><input type='checkbox' id='ddrr_1'  value='MS-400' onclick='search()'>400 MHz</a><a><input type='checkbox' id='ddrr_2' value='MS-533' onclick='search()'>533 MHz</a><a><input type='checkbox' id='ddrr_3' value='MS-667' onclick='search()'>667 MHz</a><a><input type='checkbox' id='ddrr_4' value='MS-800' onclick='search()'>800 MHz</a></div><div><span style='cursor:pointer'>Memory Size</span><a><input type='checkbox' id='ddrr_5' value='MC-256'onclick='search()'>256 MB</a><a><input type='checkbox' id='ddrr_6' value='MC-512' onclick='search()'>512 MB</a><a><input type='checkbox' id='ddrr_7' value='MC-1' onclick='search()'>1 GB</a><a><input type='checkbox' id='ddrr_8' value='MC-2' onclick='search()'>2 GB</a><a><input type='checkbox' id='ddrr_9' value='MC-4' onclick='search()'>4 GB</a><a><input type='checkbox' id='ddrr_10' value='MC-8' onclick='search()'>8 GB</a></div><div class='collapsed'><span style='cursor:pointer'>Form Factor</span><a><input type='checkbox' id='ddrr_11' value='MF-240pin' onclick='search()'>240-pin DIMM</a><a><input type='checkbox'id='ddrr_12'value='MF-200pin' onclick='search()'>200-pin SODIMM</a></div><div><span style='cursor:pointer'>Parity</span><a><input type='checkbox' id='ddrr_13' value='P-ECC' onclick='search()'>ECC</a><a><input type='checkbox' id='ddrr_14' value='P-ECC REG' onclick='search()'>ECC Registered</a></div></div></div>";
		document.getElementById("showall").style.visibility='visible';
		document.getElementById("ddr2").checked='true';
		myMenu = new SDMenu("my_menu");
		myMenu.init();
		if(document.getElementById("expAll").checked)
			myMenu.expandAll();
		else
			myMenu.collapseAll();
	}

	function create_ddr(){

		document.getElementById("sr").innerHTML="<div style='float:left;' id='my_menu' class='sdmenu'><div><span style='cursor:pointer'>Memory Speed</span><a><input type='checkbox' id='ddr_1'  value='MS-266' onclick='search()'>266 MHz</a><a><input type='checkbox' id='ddr_2'  value='MS-333' onclick='search()'>333 MHz</a><a><input type='checkbox' id='ddr_3'  value='MS-400' onclick='search()'>400 MHz</a></div><div><span style='cursor:pointer'>Memory Size</span><a><input type='checkbox' id='ddr_4' value='MC-128' onclick='search()'>128 MB</a><a><input type='checkbox' id='ddr_5' value='MC-256' onclick='search()'>256 MB</a><a><input type='checkbox' id='ddr_6' value='MC-512' onclick='search()'>512 MB</a><a><input type='checkbox' id='ddr_7' value='MC-1' onclick='search()'>1 GB</a><a><input type='checkbox' id='ddr_8' value='MC-2' onclick='search()'>2 GB</a></div><div class='collapsed'><span style='cursor:pointer'>Form Factor</span><a><input type='checkbox' id='ddr_9' value='MF-184pin' onclick='search()'>184-pin DIMM</a><a><input type='checkbox' id='ddr_10' value='MF-200pin' onclick='search()'>200-pin SODIMM</a></div><div><span style='cursor:pointer'>Parity</span><a><input type='checkbox' id='ddr_11' value='P-ECC' onclick='search()'>ECC</a><a><input type='checkbox' id='ddr_12' value='P-ECC REG' onclick='search()'>ECC Registered</a></div></div></div>";
		document.getElementById("showall").style.visibility='visible';
		document.getElementById("ddr").checked='true';
		myMenu = new SDMenu("my_menu");
		myMenu.init();
		if(document.getElementById("expAll").checked)
			myMenu.expandAll();
		else
			myMenu.collapseAll();
	}

	function create_sdram(){
		document.getElementById("sr").innerHTML="<div style='float:left;' id='my_menu' class='sdmenu'><div><span style='cursor:pointer'>Memory Speed</span><a><input type='checkbox' id='sdram_1'  value='MS-66' onclick='search()'>66 MHz</a><a><input type='checkbox' id='sdram_2'  value='MS-100' onclick='search()'>100 MHz</a><a><input type='checkbox' id='sdram_3'  value='MS-133' onclick='search()'>133 MHz</a></div><div><span>Memory Size</span><a><input type='checkbox' id='sdram_4'  value='MC-32' onclick='search()'>32 MB</a><a><input type='checkbox' id='sdram_5'  value='MC-64' onclick='search()'>64 MB</a><a><input type='checkbox' id='sdram_6'  value='MC-128' onclick='search()'>128 MB</a><a><input type='checkbox' id='sdram_7'  value='MC-256' onclick='search()'>256 MB</a><a><input type='checkbox' id='sdram_8'  value='MC-512' onclick='search()'>512 MB</a><a><input type='checkbox' id='sdram_9'  value='MC-1' onclick='search()'>1 GB</a></div><div class='collapsed'><span>Form Factor</span><a><input type='checkbox' id='sdram_10'  value='MF-168pin' onclick='search()'>168-pin DIMM</a><a><input type='checkbox' id='sdram_11'  value='MF-144pin' onclick='search()'>144-pin SODIMM</a></div><div><span>Parity</span><a><input type='checkbox' id='sdram_12'  value='P-ECC' onclick='search()'>ECC</a><a><input type='checkbox' id='sdram_13'  value='P-ECC REG' onclick='search()'>ECC Registered</a></div></div></div>";
		document.getElementById("showall").style.visibility='visible';
		myMenu = new SDMenu("my_menu");
		myMenu.init();
		if(document.getElementById("expAll").checked)
			myMenu.expandAll();
		else
			myMenu.collapseAll();

	}

	function create_rambus(){
		document.getElementById("sr").innerHTML="<div style='float:left;' id='my_menu' class='sdmenu'><div><span style='cursor:pointer'>Memory Speed</span><a><input type='checkbox' id='rambus_1'  value='MS-800' onclick='search()'>800 MHz</a><a><input type='checkbox' id='rambus_2'  value='MS-1066' onclick='search()'>1066 MHz</a></div><div><span style='cursor:pointer'>Memory Size</span><a><input type='checkbox' id='rambus_3'  value='MC-128' onclick='search()'>128 MB</a><a><input type='checkbox' id='rambus_4'  value='MC-256' onclick='search()'>256 MB</a><a><input type='checkbox' id='rambus_5'  value='MC-512' onclick='search()'>512 MB</a></div><div class='collapsed'><span style='cursor:pointer'>Form Factor</span><a><input type='checkbox' id='rambus_6'  value='MF-184pin' onclick='search()'>184-pin RIMM</a></div><div><span style='cursor:pointer'>Parity</span><a><input type='checkbox' id='rambus_7'  value='P-ECC' onclick='search()'>ECC</a><a><input type='checkbox' id='rambus_8'  value='P-ECC REG' onclick='search()'>ECC Registered</a></div></div></div>";
		document.getElementById("showall").style.visibility='visible';
		document.getElementById("rambus").checked='true';
		myMenu = new SDMenu("my_menu");
		myMenu.init();
		if(document.getElementById("expAll").checked)
			myMenu.expandAll();
		else
			myMenu.collapseAll();
		
	}
	
	function search(){
			q=query();
			//alert (q);
			xmlHttp=ajaxFunction();
	
		//	alert(document.all)
			xmlHttp.onreadystatechange=function(){
				if(xmlHttp.readyState==4){
					document.getElementById("sresult").innerHTML=xmlHttp.responseText;
					//alert("Please edit the database connection");
					init();
				}
			}
			url="http://www.buycomputermemory.com/memoryselector/asp/searchprocess.asp?q="+q;
			xmlHttp.open("GET",url,true);
	   		xmlHttp.send(null);
	
		}
	
		function query(){
			q=""
			if(document.getElementById("ddr2").checked){
			for(i=1;i<15;i++){
				name="ddrr_"+i;
				if(document.getElementById(name).checked){
					q+=document.getElementById(name).value+"~";
				}
			}
			q+="T-ddr2~";
			return q;
			}
			if(document.getElementById("ddr").checked){
			for(i=1;i<13;i++){
				name="ddr_"+i;
				if(document.getElementById(name).checked){
					q+=document.getElementById(name).value+"~";
				}
			}
			q+="T-ddr~";
			return q;
			}

			/*
			if(document.getElementById("sdram").checked){
			for(i=1;i<14;i++){
				name="sdram_"+i;
				if(document.getElementById(name).checked){
					q+=document.getElementById(name).value+"~";
				}
			}
			q+="T-sdram~";
			return q;
			}
			*/

			if(document.getElementById("rambus").checked){
			for(i=1;i<9;i++){
				name="rambus_"+i;
				if(document.getElementById(name).checked){
					q+=document.getElementById(name).value+"~";
				}
			}
			q+="T-rdram~";
			return q;
			}
		}
		function show(){
			var myMenu = new SDMenu("my_menu");
			if(document.getElementById("expAll").checked)
				myMenu.expandAll();
			else
				myMenu.collapseAll();
		}
		function close(){
			if(document.getElementById("ddr2").checked){
			for(i=1;i<15;i++){
				name="ddrr_"+i;
				if(document.getElementById(name).checked){
					document.getElementById(name).checked=false;
				}
			}			
			}
			if(document.getElementById("ddr").checked){
			for(i=1;i<13;i++){
				name="ddr_"+i;
				if(document.getElementById(name).checked){
					document.getElementById(name).checked=false;
				}
			}			
			}

			/* 
			if(document.getElementById("sdram").checked){
			for(i=1;i<14;i++){
				name="sdram_"+i;
				if(document.getElementById(name).checked){
					document.getElementById(name).checked=false;
				}
			}			
			}
			*/

			if(document.getElementById("rambus").checked){
			for(i=1;i<9;i++){
				name="rambus_"+i;
				if(document.getElementById(name).checked){
					document.getElementById(name).checked=false;
				}
			}			
			}
			document.getElementById("sresult").innerHTML="";
	}
	
	function showShoppingCart(){
			xmlHttp=ajaxFunction();	
		
				xmlHttp.onreadystatechange=function(){
					if(xmlHttp.readyState==4){
						document.getElementById("shoppingCart").innerHTML=xmlHttp.responseText;
					}
				}
				url="http://www.buycomputermemory.com/asp/cartDisplay.asp";
				xmlHttp.open("GET",url,true);
		   		xmlHttp.send(null);
	}