<!--
function checkproduct()
{
	if(document.serachproduct.productkeywork.value.replace(/^\s+|\s+$/g,"")=='请输入产品型号'){
		document.getElementById("productkeywork").value='';
	}
}
function checkproduct1()
{
	if(document.serachproduct.productkeywork.value.replace(/^\s+|\s+$/g,"")==''){
		document.getElementById("productkeywork").value='请输入产品型号'	
	}	
}

function searchcheck(){

	var istrue = true;
	var alertcontent = '';
	
	if(document.serachproduct.productkeywork.value.replace(/^\s+|\s+$/g,"")=='请输入产品型号'){
		alertcontent='请输入产品型号\n';
			istrue = false;		
	}
		
	if(istrue)
	{
		document.serachproduct.submit();
	}else {
		alert(alertcontent);
	}	 
	
}

//-->