//¹¤×÷¶¯Ì¬
function paihang(ID){
	
	var m=document.getElementById("jyv1").value
	if(ID!=m){
	
	switch(ID){
	case 1:
	document.getElementById("paihang").innerHTML="<img src='images/sy_gzdt1.jpg' width='469' height='31' usemap='#Map_1_1' border='0'>";
	document.getElementById("paihang2").style.display="block";
	document.getElementById("paihang3").style.display="none";
	document.getElementById("jyv1").value="1";
	break;
	case 2:
	document.getElementById("paihang").innerHTML="<img src='images/sy_gzdt2.jpg' width='469' height='31' usemap='#Map_1_1' border='0'>";
	document.getElementById("paihang3").style.display="block";
	document.getElementById("paihang2").style.display="none";	
	document.getElementById("jyv1").value="2";
	break;
	}
	}
}