var staticHeight = document.getElementById("middle").clientHeight + 20;
var staticRight = document.getElementById("right_bloq").clientHeight  + 20;
var staticLeft = document.getElementById("left_bloq").clientHeight  + 20;

if ((staticLeft >= staticHeight) && (staticLeft >= staticRight)) {
	//document.write ("largest = staticLeft<br>");
	document.getElementById("middle").style.height = staticLeft + "px";
	document.getElementById("right_bloq").style.height = staticLeft + "px";
}


if ((staticRight >= staticHeight) && (staticRight >= staticLeft)) {
		//document.write ("largest = staticRight<br>");

	document.getElementById("middle").style.height = staticRight + "px";
	document.getElementById("left_bloq").style.height = staticRight + "px";
}

if ((staticHeight >= staticRight) && (staticHeight >= staticLeft)) {
		//document.write ("largest = taticHeight<br>");

	document.getElementById("right_bloq").style.height = staticHeight + "px";
	document.getElementById("left_bloq").style.height = staticHeight + "px";
}

//document.write(staticLeft  + " " + staticHeight + " " + staticRight);