function createRequestObject() {
	var ro;
	var browser = navigator.appName;
	if(browser == "Microsoft Internet Explorer")
	{
		ro = new ActiveXObject("Microsoft.XMLHTTP");
	}
	else
	{
		ro = new XMLHttpRequest();
	}
	return ro;
}

function SearchResult(str)
{
    var httpObj = createRequestObject();
    var url="includes/search.php?str="+str;
	httpObj.open("GET",url,true);
	httpObj.onreadystatechange = function()
	{
	    if(httpObj.readyState == 4)
	    {
		    var response = httpObj.responseText;
		    if (response != responseold || responsecheck != 1) 
		    {
			    var responsecheck = 1;
			    document.getElementById('dvhome').innerHTML = response;
			    var responseold = response;
		    }
		}
	}
	httpObj.send(null);
	return false;
}