Event.observe(window, 'load', function() {
	$('main-nav').setStyle({opacity: .85});
	setFullScreen();
});

function window_GetInnerSize(){
	var myWidth=0,myHeight=0;
	if(typeof(window.innerWidth)=='number'){
		//Non-IE
		myWidth=window.innerWidth;
		myHeight=window.innerHeight;
	}else if(document.documentElement&&(document.documentElement.clientWidth||document.documentElement.clientHeight)){
		//IE 6+ in 'standards compliant mode'
		myWidth=document.documentElement.clientWidth;
		myHeight=document.documentElement.clientHeight;
	}else if(document.body&&(document.body.clientWidth||document.body.clientHeight)){
		//IE 4 compatible
		myWidth=document.body.clientWidth;
		myHeight=document.body.clientHeight;
	}
	return {x:myWidth,y:myHeight};
	//window.alert( 'Width = ' + myWidth );
	//window.alert( 'Height = ' + myHeight );
}

function setFullScreen(){
	try{
		var size=window_GetInnerSize();
		var b=$('main-wrapper');
		b.style.height=(size.y)+'px';
	}catch(ex){
		alert(ex.message);
	}
}