function elem(id) {
    if (document.getElementById != null) {
        return document.getElementById(id);
    }
    if (document.all != null) {
        return document.all[id];
    }
    if (document.layers != null) {
        return document.layers[id];
    }
    return null;
}

function height(id) {
    var e = elem(id);
    if (e) {
        return parseInt(e.offsetHeight);
    }
    return 0;
}

function windowHeight() {
    var height = 0;
    if( typeof( window.innerHeight ) == 'number' ) {
	//Non-IE
	height = window.innerHeight;
    } else if( document.documentElement && document.documentElement.clientHeight ) {
	//IE 6+ in 'standards compliant mode'
	height = document.documentElement.clientHeight;
    } else if( document.body && document.body.clientHeight ) {
	//IE 4 compatible
	height = document.body.clientHeight;     }
    return parseInt(height);
}

function stretchPage() {

	var innercontent_right = elem("innercontent-right");
	var innercontent_left = elem("innercontent-left");
	var stretch = elem("stretch");
	
	
	if (innercontent_left.style.height <= innercontent_right.style.height ) {
 		// alert("Nav shorter than right");
		// stretch.style.height = (height("innercontent-right") - height("innercontent-left")) + 'px';
		var stretchHeight=height("innercontent-right") - height("innercontent-left");
		if (stretchHeight < 0) {stretchHeight=0;};
		stretch.style.height = stretchHeight + 'px';
	}

}