function turnOff() {
// just turns all divs and blanket OFF
	var blanket = document.getElementById('blanket');
	blanket.style.display = 'none';
	
	var popUpDiv = document.getElementById('popUpDiv');
	popUpDiv.style.display = 'none';
	
	var popUpDiv_search = document.getElementById('popUpDiv_search');
	popUpDiv_search.style.display = 'none';
	
	var popUpDiv_cities = document.getElementById('popUpDiv_cities');
	popUpDiv_cities.style.display = 'none';
	
	var popUpDiv_counties = document.getElementById('popUpDiv_counties');	
	popUpDiv_counties.style.display = 'none';

	var popUpDiv_states = document.getElementById('popUpDiv_states');		
	popUpDiv_states.style.display = 'none';
}

function turnOffShowAd() {
	// just turns all divs and blanket OFF
	var blanket = document.getElementById('blanket');
	blanket.style.display = 'none';
	
	var popUpDiv_search = document.getElementById('popUpDiv_search');
	popUpDiv_search.style.display = 'none';
}

function toggle(div_id) {
	var el = document.getElementById(div_id);
	if ( el.style.display == 'none' ) {
		el.style.display = 'block';
		// the following block brings cursor focus only in the Advanced Search div
		if (document.getElementById('popUpDiv_search').style.display != 'none'){
			if(document.advancedSearch.searchFor){
				document.advancedSearch.searchFor.focus();
			}
		}
	}
	else {el.style.display = 'none';}
}

function blanket_size(popUpDivVar) {
	if (typeof window.innerWidth != 'undefined') {
		viewportheight = window.innerHeight;
	} else {
		viewportheight = document.documentElement.clientHeight;
	}
	if ((viewportheight > document.body.parentNode.scrollHeight) && (viewportheight > document.body.parentNode.clientHeight)) {
		blanket_height = viewportheight;
	} 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';
	
	// var popUpDiv = document.getElementById(popUpDivVar);
	// popUpDiv_height=blanket_height/2-150;//150 is half popup's height
	// popUpDiv.style.top = popUpDiv_height + 'px';
}

function window_pos(popUpDivVar) {
	if (typeof window.innerWidth != 'undefined') {
		viewportwidth = window.innerHeight;
	} else {
		viewportwidth = document.documentElement.clientHeight;
	}
	if ((viewportwidth > document.body.parentNode.scrollWidth) && (viewportwidth > document.body.parentNode.clientWidth)) {
		window_width = viewportwidth;
	} else {
		if (document.body.parentNode.clientWidth > document.body.parentNode.scrollWidth) {
			window_width = document.body.parentNode.clientWidth;
		} else {
			window_width = document.body.parentNode.scrollWidth;
		}
	}
	var popUpDiv = document.getElementById(popUpDivVar);
	window_width=window_width/2-350;// half popup's width
	popUpDiv.style.left = window_width + 'px';
}

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