var text=document.getElementById("txt");
function removeStyle()
{
var judgement=confirm("是否取消以上所有修改？");
if(judgement==true)
{
text.removeAttribute("style");
}
}
var text = document.getElementById("txt");
function changeColor(){
text.style.background="red";
text.style.color="yellow";
}
function changeBig(){
text.style.width="300px";
text.styke.height="500px";
}
function hiddenContent(){
text.style.display="none";
}
//定義"取消設置"的函數
function rec(){
var mychar=confirm("是否取消設置？") ;
if(mychar==true)
{
var unselect1=document.getElementById("con");
var unselect2=document.getElementById("txt");
unselect1.removeAttribute("style");
unselect2.removeAttribute("style");
}
}
