function commWindow(block){
	var oursblock = document.getElementById(block);
	if (oursblock){
		if (oursblock.style.display == 'block')
			oursblock.style.display = 'none';
		else 
			oursblock.style.display = 'block';
	}
}


function closeWindow(block){
	var oursblock = document.getElementById(block);
	if (oursblock){
			oursblock.style.display = 'none';
	}
}


function ClientWidth() {
	return document.compatMode=='CSS1Compat' && !window.opera?document.documentElement.clientWidth:document.body.clientWidth;
}

function ClientHeight() {
	return document.compatMode=='CSS1Compat' && !window.opera?document.documentElement.clientHeight:document.body.clientHeight;
}	

function ScrollLeft() {
	return document.compatMode=='CSS1Compat' && !window.opera?document.documentElement.scrollLeft:document.body.scrollLeft;
}

function ScrollTop() {
	return document.compatMode=='CSS1Compat' && !window.opera?document.documentElement.scrollTop:document.body.scrollTop;
}