function checkalert(theForm,form_value,alertstr,isnumber_point)
{
	form_object=eval(theForm+"."+form_value)
	if (form_object.value == "")
	{
	 alert(alertstr+"不能为空！");
	 form_object.focus();
	 return (false);
	}
	if (isnumber_point==1)
	{
		if (!isnumber(form_object.value,alertstr))
		{
			 form_object.focus();
			 return (false);
		}
	}
return (true);
}
function isnumber(isnumber_temp,alertstr)
{
	for(isnumber_i=0;isnumber_i<isnumber_temp.length;isnumber_i++)
	{
		if((isnumber_temp.charAt(isnumber_i)>'9' )||(isnumber_temp.charAt(isnumber_i)<'0'))
			{
				 alert(alertstr+"要为数字！");
				 return false;
				 break;
				 }
				 }
		 return true;
}

function object_show(id_temp)
{
	divobject=eval("document.all."+id_temp) 
	if	(divobject.style.display=="")
	{
		divobject.style.display="none";
	}
	else
	{
		divobject.style.display="";
	}
}


function DrawImage(ImgD,w,h,style)
{
   var image=new Image();
   image.src=ImgD.src;
   if(style==2)
   {
      if(image.width>0){
     ImgD.width=w;
     ImgD.height=(image.height*w)/image.width;
     }else{
     ImgD.width=image.width;
     ImgD.height=image.height;
     }
}
	if(style==1)
	{
		     if(image.height>0){
     ImgD.height=h;
     ImgD.width=(image.width*h)/image.height;
     }else{
     ImgD.width=image.width;
     ImgD.height=image.height;
	}
	
	}
	/*
    if(image.width/image.height>= w/h){
     if(image.width>0){
     ImgD.width=w;
     ImgD.height=(image.height*w)/image.width;
     }else{
     ImgD.width=image.width;
     ImgD.height=image.height;
     }
     }
    else{
     if(image.height>0){
     ImgD.height=h;
     ImgD.width=(image.width*h)/image.height;
     }else{
     ImgD.width=image.width;
     ImgD.height=image.height;
     }
}
*/
    }




//imgW=200;
//imgh=100;
//
function DrawImage__(ImgD,w,h){
   var image=new Image();
   image.src=ImgD.src;
   if(image.width>0 && image.height>0){
    flag=true;
    if(image.width/image.height>= w/h){
     //if(image.width>w){
     if(image.width>0){
     ImgD.width=w;
     ImgD.height=(image.height*w)/image.width;
     }else{
     ImgD.width=image.width;
     ImgD.height=image.height;
     }
     //ImgD.alt=image.width+"×"+image.height;
     }
    else{
     //if(image.height>h){
     if(image.height>0){
     ImgD.height=h;
     ImgD.width=(image.width*h)/image.height;
     }else{
     ImgD.width=image.width;
     ImgD.height=image.height;
     }
     //ImgD.alt=image.width+"×"+image.height;
     }
    }
}



var a_Colour='ff0000';
var b_Colour='00ff00';
var c_Colour='0000ff';
var Size=50;

var YDummy=new Array(),XDummy=new Array(),xpos=0,ypos=0,ThisStep=0;step=0.03;
if (document.layers){
window.captureEvents(Event.MOUSEMOVE);
function nsMouse(evnt){
xpos = window.pageYOffset+evnt.pageX+6;
ypos = window.pageYOffset+evnt.pageY+16;
}
window.onMouseMove = nsMouse;
}
else if (document.all)
{
function ieMouse(){
xpos = document.body.scrollLeft+event.x+6;
ypos = document.body.scrollTop+event.y+16;
}
document.onmousemove = ieMouse;
}

function swirl(){
for (i = 0; i < 3; i++)
 { 
  YDummy[i]=ypos+Size*Math.cos(ThisStep+i*2)*Math.sin((ThisStep)*6);
  XDummy[i]=xpos+Size*Math.sin(ThisStep+i*2)*Math.sin((ThisStep)*6);
 }
ThisStep+=step;
setTimeout('swirl()',10);
}

var amount=10;
if (document.layers){
for (i = 0; i < amount; i++)
{
document.write('<layer name=nsa'+i+' top=0 left=0 width='+i/2+' height='+i/2+' bgcolor='+a_Colour+'></layer>');
document.write('<layer name=nsb'+i+' top=0 left=0 width='+i/2+' height='+i/2+' bgcolor='+b_Colour+'></layer>');
document.write('<layer name=nsc'+i+' top=0 left=0 width='+i/2+' height='+i/2+' bgcolor='+c_Colour+'></layer>');
}
}
else if (document.all){
document.write('<div id="ODiv" style="position:absolute;top:0px;left:0px">'
+'<div id="IDiv" style="position:relative">');
for (i = 0; i < amount; i++)
{
document.write('<div id=x style="position:absolute;top:0px;left:0px;width:'+i/2+';height:'+i/2+';background:'+a_Colour+';font-size:'+i/2+'"></div>');
document.write('<div id=y style="position:absolute;top:0px;left:0px;width:'+i/2+';height:'+i/2+';background:'+b_Colour+';font-size:'+i/2+'"></div>');
document.write('<div id=z style="position:absolute;top:0px;left:0px;width:'+i/2+';height:'+i/2+';background:'+c_Colour+';font-size:'+i/2+'"></div>');
}
document.write('</div></div>');
}
function prepos(){
var ntscp=document.layers;
var msie=document.all;
if (document.layers){
for (i = 0; i < amount; i++)
{
 if (i < amount-1) 
 {
 ntscp['nsa'+i].top=ntscp['nsa'+(i+1)].top;ntscp['nsa'+i].left=ntscp['nsa'+(i+1)].left;
 ntscp['nsb'+i].top=ntscp['nsb'+(i+1)].top;ntscp['nsb'+i].left=ntscp['nsb'+(i+1)].left;
 ntscp['nsc'+i].top=ntscp['nsc'+(i+1)].top;ntscp['nsc'+i].left=ntscp['nsc'+(i+1)].left;
 } 
else  
 {
 ntscp['nsa'+i].top=YDummy[0];ntscp['nsa'+i].left=XDummy[0];
 ntscp['nsb'+i].top=YDummy[1];ntscp['nsb'+i].left=XDummy[1];
 ntscp['nsc'+i].top=YDummy[2];ntscp['nsc'+i].left=XDummy[2];
 }
}
}
else if (document.all){
for (i = 0; i <  amount; i++)
{
 if (i < amount-1) 
 {
 msie.x[i].style.top=msie.x[i+1].style.top;msie.x[i].style.left=msie.x[i+1].style.left;
 msie.y[i].style.top=msie.y[i+1].style.top;msie.y[i].style.left=msie.y[i+1].style.left;
 msie.z[i].style.top=msie.z[i+1].style.top;msie.z[i].style.left=msie.z[i+1].style.left;
 } 
else 
 {
 msie.x[i].style.top=YDummy[0];msie.x[i].style.left=XDummy[0];
 msie.y[i].style.top=YDummy[1];msie.y[i].style.left=XDummy[1];
 msie.z[i].style.top=YDummy[2];msie.z[i].style.left=XDummy[2];
 }
}
}
setTimeout("prepos()",10);
}
function Start(){
swirl(),prepos()
}
//window.onload=Start;