//屏蔽退格键
//作者: 廖建宁 2004-4-12
function KeyDown(){ 
if (event.keyCode==8) {
event.keyCode=0;
event.returnValue=false;
}}


function InputKeyDown(inputname){ 
if (event.keyCode==8) {
	inputname.value=inputname.value.substring(0,inputname.value.length-1);
}
}

//查找页面中元素
function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}
//控制层显示
function MM_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}

//菜单控制
function ViewMenu(theid){
	if (theid=="menu1") {
		/*menuimg1.src='images/corrow2.gif';
		menuimg2.src='images/corrow1.gif';
		menuimg3.src='images/corrow1.gif';
		menuimg4.src='images/corrow1.gif';
		menuimg5.src='images/corrow1.gif';*/
		MM_showHideLayers('Layer1','','show');
		MM_showHideLayers('Layer2','','hide');
		MM_showHideLayers('Layer3','','hide');
		MM_showHideLayers('Layer4','','hide');
		MM_showHideLayers('Layer5','','hide');		
		MM_showHideLayers('Layer6','','hide');
	}
	if (theid=="menu2") {
		/*menuimg2.src='images/corrow2.gif';
		menuimg1.src='images/corrow1.gif';
		menuimg3.src='images/corrow1.gif';
		menuimg4.src='images/corrow1.gif';
		menuimg5.src='images/corrow1.gif';*/
		MM_showHideLayers('Layer1','','hide');
		MM_showHideLayers('Layer2','','show');
		MM_showHideLayers('Layer3','','hide');
		MM_showHideLayers('Layer4','','hide');
		MM_showHideLayers('Layer5','','hide');		
		MM_showHideLayers('Layer6','','hide');
	}
	if (theid=="menu3") {
		/*menuimg3.src='images/corrow2.gif';
		menuimg2.src='images/corrow1.gif';
		menuimg1.src='images/corrow1.gif';
		menuimg4.src='images/corrow1.gif';
		menuimg5.src='images/corrow1.gif';*/
		MM_showHideLayers('Layer1','','hide');
		MM_showHideLayers('Layer2','','hide');
		MM_showHideLayers('Layer3','','show');
		MM_showHideLayers('Layer4','','hide');
		MM_showHideLayers('Layer5','','hide');		
		MM_showHideLayers('Layer6','','hide');
	}
	if (theid=="menu4") {
		/*menuimg4.src='images/corrow2.gif';
		menuimg2.src='images/corrow1.gif';
		menuimg3.src='images/corrow1.gif';
		menuimg1.src='images/corrow1.gif';
		menuimg5.src='images/corrow1.gif';*/
		MM_showHideLayers('Layer1','','hide');
		MM_showHideLayers('Layer2','','hide');
		MM_showHideLayers('Layer3','','hide');
		MM_showHideLayers('Layer4','','show');
		MM_showHideLayers('Layer5','','hide');		
		MM_showHideLayers('Layer6','','hide');
	}
	if (theid=="menu5") {
		/*menuimg5.src='images/corrow2.gif';
		menuimg2.src='images/corrow1.gif';
		menuimg3.src='images/corrow1.gif';
		menuimg4.src='images/corrow1.gif';
		menuimg1.src='images/corrow1.gif';*/
		MM_showHideLayers('Layer1','','hide');
		MM_showHideLayers('Layer2','','hide');
		MM_showHideLayers('Layer3','','hide');
		MM_showHideLayers('Layer4','','hide');
		MM_showHideLayers('Layer5','','show');		
		MM_showHideLayers('Layer6','','hide');
	}
	if (theid=="menu6") {
		/*menuimg1.src='images/corrow1.gif';
		menuimg2.src='images/corrow1.gif';
		menuimg3.src='images/corrow1.gif';
		menuimg4.src='images/corrow1.gif';
		menuimg5.src='images/corrow1.gif';*/
		MM_showHideLayers('Layer1','','hide');
		MM_showHideLayers('Layer2','','hide');
		MM_showHideLayers('Layer3','','hide');
		MM_showHideLayers('Layer4','','hide');
		MM_showHideLayers('Layer5','','hide');
		MM_showHideLayers('Layer6','','show');
	}

}


function popwin(url,thewidth,theheight)
{
if (thewidth=="") {thewidth=400;}
if (theheight=="") {theheight=300;}
var thiswindow=window.open(url,'',"toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars=yes,resizable=no,width="+thewidth+",height="+theheight+",left=150,top=100");
return false;
}