var resizeInterval = 0;
var flashWidth = 0;
var flashOffset = 0;
var elementId = "";

function startInterval(objWidth, maxOffset, objToMove)
{
	flashWidth = objWidth;
	flashOffset = maxOffset;
	elementId = objToMove;
	resizeInterval = setInterval ( "nudgeFlash()", 15 );
}

function killInterval()
{
	clearInterval( resizeInterval );
}


function nudgeFlash()
{
	if ( getViewport() < flashWidth )
	{
		document.getElementById(elementId).style.left = Math.max( -flashOffset, (getViewport() - flashWidth ) /2 ) + "px";
	}
	else
	{
		document.getElementById(elementId).style.left = 0; + "px"
	}

}

function getViewport()
{
	var viewportwidth;
	 var viewportheight;
	 
	 // the more standards compliant browsers (mozilla/netscape/opera/IE7) use window.innerWidth and window.innerHeight
	 
	 if (typeof window.innerWidth != 'undefined')
	 {
		  viewportwidth = window.innerWidth;
		  viewportheight = window.innerHeight;
	 }
	 
	// IE6 in standards compliant mode (i.e. with a valid doctype as the first line in the document)

	 else if (typeof document.documentElement != 'undefined'
		 && typeof document.documentElement.clientWidth !=
		 'undefined' && document.documentElement.clientWidth != 0)
	 {
		   viewportwidth = document.documentElement.clientWidth;
		   viewportheight = document.documentElement.clientHeight;
	 }
	 
	 // older versions of IE
	 
	 else
	 {
		   viewportwidth = document.getElementsByTagName('body')[0].clientWidth;
		   viewportheight = document.getElementsByTagName('body')[0].clientHeight;
	 }
	
	return viewportwidth;

}