function getDifHeight (DIV) {
	var subheight = 165;
	
	/* subheight = document.getElementById("balken_head").offsetHeight;
	subheight = subheight + document.getElementById("nav_box").offsetHeight;
	subheight = subheight + document.getElementById("footer").offsetHeight;
	subheight = subheight + 22; */
	
	subheight = subheight + document.getElementById("headerimg").offsetHeight;
	
	middleheight = DIV.offsetHeight;
	windowheight = window.innerHeight;
	
	if( navigator.appName == "Microsoft Internet Explorer") {
		windowheight = document.body.offsetHeight;
	}
	
	dif_height = windowheight - (middleheight + subheight );
	return dif_height;
}

function resizemiddle(DIV) {
	DIV.style.height = '';
	if ( getDifHeight(DIV) > 0 ) {
		DIV.style.height = DIV.offsetHeight + getDifHeight(DIV) +"px";
	}

	if (document.getElementById("shop_img")){
		document.getElementById("shop_img").style.left = "20px";
		document.getElementById("shop_img").style.bottom ="80px";
	}
}