function Change_Big_One(thumb){
document.getElementById('BigOne').src=thumb.src.replace("_th","")
}
function Change_Big_One_back(thumb){
document.getElementById('BigOne').src="images/Bwthyn_Castan_and_Bwthyn_Onnen.JPG";
}
function Change_Big_Two(thumb){
document.getElementById('BigTwo').src=thumb.src.replace("_th","")
}
function Change_Big_Two_back(thumb){
document.getElementById('BigTwo').src="images/Bwthyn Derw.JPG";
}
function Change_Big_Three(thumb){
document.getElementById('BigThree').src=thumb.src.replace("_th","")
}
function Change_Big_Three_back(thumb){
document.getElementById('BigThree').src="images/Bwthyn_Castan_and_Bwthyn_Onnen.JPG";
}
function Change_Big_Four(thumb){
document.getElementById('BigFour').src=thumb.src.replace("_th","")
}
function Change_Big_Four_back(thumb){
document.getElementById('BigFour').src="images/Ty Canol Cottage.JPG";
}
function Change_Big_Five(thumb){
document.getElementById('BigFive').src=thumb.src.replace("_th","")
}
function Change_Big_Five_back(thumb){
document.getElementById('BigFive').src="images/Ty Mawr Cottage.JPG";
}
function Change_Big_Six(thumb){
document.getElementById('BigSix').src=thumb.src.replace("_th","")
}
function Change_Big_Six_back(thumb){
document.getElementById('BigSix').src="images/Ty Twt.JPG";
}
function Change_Big_Pool(thumb){
document.getElementById('BigPool').src=thumb.src.replace("_th","")
}
function Change_Big_Pool_back(thumb){
document.getElementById('BigPool').src="images/The sparkling pool.JPG";
}
function Change_Big_Play(thumb){
document.getElementById('BigPlay').src=thumb.src.replace("_th","")
}
function Change_Big_Play_back(thumb){
document.getElementById('BigPlay').src="images/BBQ, Swings and Play Field Beyond.JPG";
}
function Change_Big_Seven(thumb){
document.getElementById('BigSeven').src=thumb.src.replace("_th","")
}
function Change_Big_Seven_back(thumb){
document.getElementById('BigSeven').src="images/Trenewydd June 2007 009.jpg";
}