function changePica(){
	num = document.teststring.test1.value;
	document.getElementById('picWidthHeight').setAttribute("src","images/menuPic/b"+num+".jpg");
	document.getElementById('picWidthHeight').style.display="block";
	//alert("a");
}

function maskFunction(m,c){
//alert(javaNum);
mV=document.getElementById(m)
cV=document.getElementById(c);
mV.style.display="block";
cV.style.overflow="hidden";

changePica();

document.getElementById("picPre").style.display="block";
}

function closeMask(m,c){
mV=document.getElementById(m)
cV=document.getElementById(c);
mV.style.display="none";
cV.style.overflow="visible";
document.getElementById("picPre").style.display="none";
}