Dynamic add option to Select Element

//first clear the content

obj=document.getElementByID("mysel")

mysize=obj.length

for (x=mysize-1;x>-1;x--){

obj.remove(x)

}

myobj=document.createElement("option")

myobj.text=myary[x]

myobj.value=myary[x]

myobj.selected =true

if (navigator.appName=="Microsoft Internet Explorer")

obj.add(myobj)

else

obj.appendChild(myobj)