function isset(variable){

	if(typeof(variable) == 'undefined'){
		return false;	
	}
	
	return true;
}

function checkSearch()
{
	var s = $("#search");
	if( s.val() != "" && s.val() != "Type your question here." )
	  return true;
	return false;
}


function getRandom(low, high)
{
    return Math.floor(Math.random()*high) + low;
}


function preLoadImage(url)
{
  var t = new Image()
  t.src = url;
}

function showPhotoFrame()
{
	var frame = jQuery('#PhotoFrame');
	
	var edclogo = "/images/template/edclogo.png";
	
	// Logic for choosing photo
	var imgsrc = "/images/splash/photo" + getRandom(1,8) + ".png";
	
	if( frame.is('.small') )
	  imgsrc = "/images/template/photos/photo" + getRandom(1,8) + ".png";
	
	
	// End Photo chooser
	
	if( frame )
	{
		var arVersion = navigator.appVersion.split("MSIE");
		var version = parseFloat(arVersion[1]);
		
		if ((version >= 5.5) && (version < 7.0) && (document.body.filters))
		{
			frame.css("filter","progid:DXImageTransform.Microsoft.AlphaImageLoader"
					+ "(src=\'" + imgsrc + "\', sizingMethod='scale')");
			jQuery('#EDCLogo').css("filter","progid:DXImageTransform.Microsoft.AlphaImageLoader"
					+ "(src=\'" + edclogo + "\', sizingMethod='scale')");
		}
		else
		{
		  frame.css("background-image","url(" + imgsrc + ")");
		  jQuery('#EDCLogo').css("background-image","url(" + edclogo + ")");
		}
	}
}

function init()
{
	showPhotoFrame();
}

$(document).ready(init);