<!--
function calculate(){ 
var m=new Number(); 
var n=new Number(); 
var o=new Number();
m=document.getElementById("chang").value; 
n=document.getElementById("kuan").value; 
o=document.getElementById("gao").value; 
p=Math.round(m*n*o/50)/100;
document.getElementById("jieguo").value=p; 
} 
function califang(){ 
var m=new Number();
m=document.getElementById("lifang").value;
p=Math.round(m*1000/5);
if(p>20)
 p=Math.round(p);
document.getElementById("zhong").value=p; 
}
function FP_jumpMenu(el,frm,sel) {//v1.0 
var href=el.options[el.selectedIndex].value; if(sel) el.selectedIndex=0; 
if('_new'==frm) open(href); else eval(frm+".location='"+href+"'"); 
} 
// -->