//created by tangyan
//date:2007-04-14
<!----
function select(num){
	for(i=1;i<=7;i++)
    {
    	eval("document.getElementById('num"+i+"').className='ss2'");
    }
    eval("document.getElementById('num"+num+"').className='ss1'");
	
	 switch(num)
	 {
	 	case 1:
		{
			document.searchfrm.action="company.aspx";
			break;
		}
		case 2:
		{
			document.searchfrm.action="sell.aspx";
			break;
		}
		case 3:
		{
			document.searchfrm.action="buy.aspx";
			break;
		}
		case 4:
		{
			document.searchfrm.action="info.aspx";
			break;
		}
		case 5:
		{
			document.searchfrm.action="image.aspx";
			break;
		}
		case 6:
		{
			document.searchfrm.action="deputize.aspx";
			break;
		}
		case 7:
		{
			document.searchfrm.action="used.aspx";
			break;
		}
		case 8:
		{
			document.searchfrm.action="http://bbs.hvacr.cn";
			break;	
		}
		case 9:
		 {
			document.searchfrm.action="http://www.hvacrex.com";
			break;
		}
		default:
			break;
	 }
}

function ck_null()
{
	var str = document.searchfrm.keywords.value;
	if(str.substring(0,3) =="请输入" || str.replace(/^\s+$/,'') == "")
	{
		_error_msg_show("请输入您要查找的内容！");
		searchfrm.keywords.focus();
		return false;
	}
	return true;
}

function ck(obj)
{
	var str = obj.value;
	if(str.substring(0,3) =="请输入" || str.replace(/^\s+$/,'') == "")
	{
		_error_msg_show("请输入您要查找的内容！");
		obj.focus();
		return false;
	}
	return true;
}
function SubmitKeyClick(button) 
{ 
		if(event.keyCode == 13) 
		{ event.keyCode=9;
		event.returnValue = false; 
		document.all[button].click();            
		}
} 
//---->