// Ramdom Header Imgaes
images_header = new Array();

// Add to this array for more images
images_header[0] = "<img src=\"../images/hdr_calgary-downtown-pana.jpg\" alt=\"Third Angle\"/>";
images_header[1] = "<img src=\"../images/hdr_farm-hills-mountains.jpg\" alt=\"Third Angle\"/>";
images_header[2] = "<img src=\"../images/hdr_image_calgary.jpg\" alt=\"Third Angle\"/>";
images_header[3] = "<img src=\"../images/hdr_red-lake-mountains.jpg\" alt=\"Third Angle\"/>";


idx = Math.floor(Math.random()*images_header.length);


// Toggle slide image by default...
// 1 - true; show image by default
// 0 - false; hide image by default
var showDefault = 1;

function FC_SHOWIMAGE(itm, to, now)
{

		// set the cookie value
		createCookie("ta_imageslide","true",0);
		
		obj=document.getElementById(itm);
		obj.style.display = "block";
		setTimeout("slideDown('"+itm+"',"+to+","+now+")",200);				

}

function slideDown(itm, to, now)
{	

	obj=document.getElementById(itm);
	var cHeight = obj.offsetHeight;
	var reqHt = to-1;
	if(cHeight < reqHt)
	{
		var curr = (to - now)/7;			
		now += curr;
		obj.style.height = now +"px";
		setTimeout("slideDown('"+itm+"',"+to+","+now+")",0);		
	}
	else{
		obj.innerHTML = images_header[idx];//'<img src="../images/bg_headertimage.jpg" alt="" />';
		obj1=document.getElementById("div_TOGGLEIMAGE");
		obj1.innerHTML ='<a onclick="slideUp(\'div_IMG\');eraseCookie(\'ta_imageslide\');" href="#" title="Hide Image"><img src="../images/_btn_ToggleImage_hide.gif" alt="Hide Image"/></a>';
	}

}


function slideUp(itm)
{
	obj=document.getElementById(itm);
	var cHeight = obj.offsetHeight;

	var now = cHeight;
	if(cHeight > 10 )
	{
		var curr = cHeight/7;
		now -= curr;
		obj.style.height = now +"px";
		setTimeout("slideUp('"+itm+"')",0);		
	}
	else{
	obj.innerHTML = '';	
	obj.style.height = "0px";
	obj.style.display = "none";
	obj1=document.getElementById("div_TOGGLEIMAGE");
	obj1.innerHTML = '<a onclick="FC_SHOWIMAGE(\'div_IMG\',142,0);" href="#" title="Show Image"><img src="../images/_btn_ToggleImage_show.gif" title="Show Image" /></a>';
	}
}


// Show the image by default
//FC_SHOWIMAGE('div_IMG',142,0);

if((showDefault == 1) && (readCookie("ta_imageslide_firsttime") != "1"))
{
	//FC_SHOWIMAGE('div_IMG',142	,0);
	
	FC_SHOWIMAGE('div_IMG',142	,0);
	createCookie("ta_imageslide_firsttime","1",0);
	
}else if(readCookie("ta_imageslide") == "true")
{
	//FC_SHOWIMAGE('div_IMG',142	,0);
	obj=document.getElementById("div_IMG");
	obj.style.display = "block";
	obj.style.height = "140px";
	obj.innerHTML = images_header[idx];//'<img src="../images/bg_headertimage.jpg" alt="" />';
	
	
	obj1=document.getElementById("div_TOGGLEIMAGE");
	obj1.innerHTML ='<a onclick="slideUp(\'div_IMG\');eraseCookie(\'ta_imageslide\');" href="#" title="Hide Image"><img src="../images/_btn_ToggleImage_hide.gif" alt="Hide Image" /></a>';
}
else
{
		obj1=document.getElementById("div_TOGGLEIMAGE");
	obj1.innerHTML = '<a onclick="FC_SHOWIMAGE(\'div_IMG\',142,0);" href="#" title="Show Image"><img src="../images/_btn_ToggleImage_show.gif" title="Show Image" /></a>';
	}