// JavaScript Document
function Set_Cookie (name, value) {
		var expires = new Date();
		expires.setTime(expires.getTime() + (30*24*60*60*1000));
		document.cookie = name+"="+escape( value )+";expires="+expires.toGMTString()+";path=/";
}

function Get_Cookie( check_name ) {
	// first we'll split this cookie up into name/value pairs
	// note: document.cookie only returns name=value, not the other components
	var a_all_cookies = document.cookie.split( ';' );
	var a_temp_cookie = '';
	var cookie_name = '';
	var cookie_value = '';
	var b_cookie_found = false; // set boolean t/f default f

	for ( i = 0; i < a_all_cookies.length; i++ )
	{
		// now we'll split apart each name=value pair
		a_temp_cookie = a_all_cookies[i].split( '=' );


		// and trim left/right whitespace while we're at it
		cookie_name = a_temp_cookie[0].replace(/^\s+|\s+$/g, '');

		// if the extracted name matches passed check_name
		if ( cookie_name == check_name )
		{
			b_cookie_found = true;
			// we need to handle case where cookie has no value but exists (no = sign, that is):
			if ( a_temp_cookie.length > 1 )
			{
				cookie_value = unescape( a_temp_cookie[1].replace(/^\s+|\s+$/g, '') );
			}
			// note that in cases where cookie is initialized but no value, null is returned
			return cookie_value;
			break;
		}
		a_temp_cookie = null;
		cookie_name = '';
	}
	if ( !b_cookie_found )
	{
		return null;
	}
}

function changetempunits(temp) {
	vwstemp=temp;
		if (temp == 'F') {uomTemp = '&deg;F'; 	uomTempCnvt = 0;
		document.units.set_temp[2].checked=true;
		document.units.set_temp[1].checked=false;
		}
		else {uomTemp = '&deg;C'; 	uomTempCnvt = 1;
				
		document.units.set_temp[1].checked=true;
		document.units.set_temp[2].checked=false;
		}
	Set_Cookie('vwstemp',temp);
}

function changewindunits(wvalue) {
	vwswind=wvalue;
		if (wvalue == 'K') {uomWind = ' kts'; uomWindCnvt = 2;
			document.units.set_wind[1].checked=false;
			document.units.set_wind[2].checked=false;
			document.units.set_wind[3].checked=false;
			document.units.set_wind[4].checked=true;
			}
		else {
		if (wvalue == 'P') {uomWind = ' m/s'; uomWindCnvt = 3;
			document.units.set_wind[1].checked=false;
			document.units.set_wind[2].checked=false;
			document.units.set_wind[3].checked=true;
			document.units.set_wind[4].checked=false;
			} 
		else {
		if (wvalue == 'KM') {uomWind = ' km/h'; uomWindCnvt = 1;
			document.units.set_wind[1].checked=false;
			document.units.set_wind[2].checked=true;
			document.units.set_wind[3].checked=false;
			document.units.set_wind[4].checked=false;
			}
 		else {wvalue = 'MPH'; uomWind = ' mph'; uomWindCnvt = 0;
			document.units.set_wind[1].checked=true;
			document.units.set_wind[2].checked=false;
			document.units.set_wind[3].checked=false;
			document.units.set_wind[4].checked=false;
			}
		  }
		}
	
	Set_Cookie('vwswind',wvalue);
}

function changerainunits(rvalue) {
	vwsrain=rvalue;
		if (rvalue == 'in') {uomRain = ' in';    	uomRainCnvt = 0;	var dpRain = 2;
			document.units.set_rain[1].checked=false;
			document.units.set_rain[2].checked=true;
			}
		else {uomRain = ' mm';  		uomRainCnvt = 1;	dpRain = 1;
			document.units.set_rain[1].checked=true;
			document.units.set_rain[2].checked=false;
			}
	Set_Cookie('vwsrain',rvalue);
}

function changebarometerunits(bvalue) {
	vwsbaro=bvalue;
		if (bvalue == 'inHg') {uomBaro = ' inHg';  	uomBaroCnvt = 0;	var dpBaro = 2;
		document.units.set_baro[1].checked=false;
		document.units.set_baro[2].checked=false;
		document.units.set_baro[3].checked=true;
		document.units.set_baro[4].checked=false;
		}
			else {
				if (bvalue == 'mmHg') {uomBaro = ' mmHg';  	uomBaroCnvt = 1;	var dpBaro = 1;
				document.units.set_baro[1].checked=false;
				document.units.set_baro[2].checked=false;
				document.units.set_baro[3].checked=false;
				document.units.set_baro[4].checked=true;
				}
		 		else {
					if (bvalue == 'mb')  {uomBaro = ' mb'; 		uomBaroCnvt = 2;	dpBaro = 1;
					document.units.set_baro[1].checked=true;
					document.units.set_baro[2].checked=false;
					document.units.set_baro[3].checked=false;
					document.units.set_baro[4].checked=false;
					}
						else {
							uomBaro = ' hPa'; 		uomBaroCnvt = 3;	dpBaro = 1;
							document.units.set_baro[1].checked=false;
							document.units.set_baro[2].checked=true;
							document.units.set_baro[3].checked=false;
							document.units.set_baro[4].checked=false;
				}
			}	
		}
	
	Set_Cookie('vwsbaro',bvalue);
}

function changeheightunits(hvalue) {
		if (hvalue == 'M') {uomHeight = ' m'; 		uomHeightCnvt = 1;	uomDistance = ' km'; 	uomDistanceCnvt = 1;}
		else {uomHeight = ' ft';  	uomHeightCnvt = 0;	uomDistance = ' miles'; var uomDistanceCnvt = 0;}
	
	Set_Cookie('vwsheight',hvalue);
}	
 
		
function changeStyleSheet(title) {
  var links = document.getElementsByTagName("link");
    for(var i = 0; i < links.length; i++) {
      if(links[i].getAttribute("title")) links[i].disabled = true;
	  if(links[i].getAttribute("title") == title) {
	    links[i].disabled = false;
		Set_Cookie('stylesheet',title);
		
		}
    }
}
function getSettings() {
    
	var s_styles = Get_Cookie('stylesheet');
	if (s_styles) {changeStyleSheet(s_styles);}
	
	var s_temp = Get_Cookie('vwstemp');
	if (s_temp) {changetempunits(s_temp);}
	
	var s_wind = Get_Cookie('vwswind');
	if (s_wind) {changewindunits(s_wind);}
	
	var s_rain = Get_Cookie('vwsrain');
	if (s_rain) {changerainunits(s_rain);}
	
	var s_baro = Get_Cookie('vwsbaro');
	if (s_baro) {changebarometerunits(s_baro);}
	
	var s_height = Get_Cookie('vwsheight');
	if (s_height) {changeheightunits(s_height);}
	
	
	
}