// JavaScript Document
function ajax_alert(coin)
	{
	var ajaxRequest; 	
	try
		{
		ajaxRequest = new XMLHttpRequest();
	   	}
	catch (e)
		{
		// Internet Explorer Browsers
		try
			{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
			}
		catch (e)
			{
			try
				{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
				}
			catch (e)
				{
				// Something went wrong
				alert("Your browser broke!");
				return false;
				}
			}
		}
	ajaxRequest.onreadystatechange = function()
		{
		var display_id='showhide';
		if(ajaxRequest.readyState == 1)
			{
			document.getElementById(display_id).innerHTML="<center>Please Wait...</center>";	
			}
			
		if(ajaxRequest.readyState == 4)
			{			
			document.getElementById(display_id).innerHTML = ajaxRequest.responseText;
			}
		}
	var queryString = "coin=" + coin ;
	ajaxRequest.open("GET", "currency_ajax.php?" + queryString, true);
	ajaxRequest.send(null); 
	}