function CheckAll()  
{
	if(document.f.chkall.checked)
	{
		for (i=0;i < document.f.item.length;i++)  
		{
			document.f.item[i].checked = true; 
		}		
	}
	else
	{
		for (i=0;i < document.f.item.length;i++)  
		{
			document.f.item[i].checked = false; 
		}		
	}
	  
} 
function CheckForm(form)
{
	if(form.wd.value == "")
	{
		alert("请输入关键字！");
		return false;
	}
	if(form.rad_manufAgent != null)
	{
		if(form.rad_manufAgent.value == "")
		{
			alert("请选择厂商或代理商！");
			return false;
		}
	}
	return true;
}
function GetArgsFromHref(sHref, sArgName)
{
    var args  = sHref.split("?");
    var retval = "";
    
    if(args[0] == sHref) /*参数为空*/
    {
         return retval; /*无需做任何处理*/
    }  
    var str = args[1];
    args = str.split("&");
    for(var i = 0; i < args.length; i ++)
    {
        str = args[i];
        var arg = str.split("=");
        if(arg.length <= 1) continue;
        if(arg[0] == sArgName) retval = arg[1]; 
    }
    return retval;
}
function first_load()
{
	var wd = GetArgsFromHref(window.location.href,'kword');
	document.f.wd.value = wd;
	document.f.wd.focus();
}