var millisec	= 3000;
var iTimeout	= 1000 * 40; // seconds

function opacity(id, opacStart, opacEnd, millisec) 
{
	//speed for each frame 
	var speed = Math.round(millisec / 100); 
	var timer = 0; 
	
	//determine the direction for the blending, if start and end are the same nothing happens 
	if(opacStart > opacEnd) 
	{ 
		for(i = opacStart; i >= opacEnd; i--) 
		{ 
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
			timer++; 
		}
	} 
	else if(opacStart < opacEnd) 
	{
		for(i = opacStart; i <= opacEnd; i++) 
		{ 
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
			timer++; 
		} 
	}
} 

//change the opacity for different browsers 
function changeOpac(opacity, id) 
{ 
	var object;
	object = window.document.getElementById(id).style; 
	object.opacity = (opacity / 100); 
	object.MozOpacity = (opacity / 100); 
	object.KhtmlOpacity = (opacity / 100); 
	object.filter = "alpha(opacity=" + opacity + ")"; 
} 


function fnLoad()
{
	opacity('divMain', 0, 100, millisec);
	MM_preloadImages('images/downloads_over.jpg','images/support_over.jpg','images/viewdemo_over.jpg','images/casestudies_over.jpg','images/trainings_over.jpg');
}

window.onload = fnLoad;