function toggle(div_id) {
	var el = document.getElementById(div_id);

	if (el.style.display == 'none') {
		el.style.display = 'block';
	} else {
		el.style.display = 'none';
	}
}


/*
function blanket_size(popUpDivVar) {
	var popUpDiv = document.getElementById(popUpDivVar);

	var pageWidth = 0, pageHeight = 0;
	if(typeof(window.innerWidth) == 'number') {
		//Non-IE
		pageWidth = window.innerWidth;
		pageHeight = window.innerHeight;
	} else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
		//IE 6+ in 'standards compliant mode'
		pageWidth = document.documentElement.clientWidth;
		pageHeight = document.documentElement.clientHeight;
	} else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
		//IE 4 compatible
		pageWidth = document.body.clientWidth;
		pageHeight = document.body.clientHeight;
	}

	blanket_width = pageWidth;

	if ((pageHeight > document.body.parentNode.scrollHeight) && (pageHeight > document.body.parentNode.clientHeight)) {
		blanket_height = pageHeight;
	} else {
		if (document.body.parentNode.clientHeight > document.body.parentNode.scrollHeight) {
			blanket_height = document.body.parentNode.clientHeight;
		} else {
			blanket_height = document.body.parentNode.scrollHeight;
		}
	}
	var blanket = document.getElementById('blanket');
	blanket.style.height = blanket_height + 'px';
	blanket.style.width = blanket_width + 'px';
}
*/


function window_pos(popUpDivVar) {
	var popUpDiv = document.getElementById(popUpDivVar);
	var pageWidth = 0, pageHeight = 0;
	var scrollOffsetX = 0, scrollOffsetY = 0;

	if(typeof(window.innerWidth) == 'number') {
		//Non-IE
		pageWidth = window.innerWidth;
		pageHeight = window.innerHeight;
	} else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
		//IE 6+ in 'standards compliant mode'
		pageWidth = document.documentElement.clientWidth;
		pageHeight = document.documentElement.clientHeight;
	} else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
		//IE 4 compatible
		pageWidth = document.body.clientWidth;
		pageHeight = document.body.clientHeight;
	}

	if(typeof(window.pageYOffset) == 'number') {
		//Netscape compliant
		scrollOffsetY = window.pageYOffset;
		scrollOffsetX = window.pageXOffset;
	} else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
		//DOM compliant
		scrollOffsetY = document.body.scrollTop;
		scrollOffsetX = document.body.scrollLeft;
	} else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
		//IE6 standards compliant mode
		scrollOffsetY = document.documentElement.scrollTop;
		scrollOffsetX = document.documentElement.scrollLeft;
	}

	popUpDiv.style.left = pageWidth / 2 - 375 + 'px';
	popUpDiv.style.top = pageHeight / 2 - 225 + 'px';
}



function popup(windowname) {
/*	blanket_size(windowname);*/
	window_pos(windowname);
	toggle('blanket');
	toggle(windowname);
}


/*
function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp('(^|\\\\s)'+searchClass+'(\\\\s|$)');
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}
*/

/*
function show(element) 
{
	obj=document.getElementById(element);
	obj.style.display = "block";
}



function hide(element) 
{
	obj=document.getElementById(element);
	obj.style.display = "none";
}*/