// JavaScript Document
function change_button_image(image,imageID)
{
	document.getElementById(imageID).src="images/"+image;
}

function checkNum(x)
{
	if (isNaN(x))
	{
		alert ("Only number is allowed here");
		document.search_main1.city_zip.focus();
	}
}

function validate()
{
	if(document.search_main1.pro_code.value == "" && document.search_main1.city_name.value=="")
	{
		alert("Please select province with city");
		document.search_main1.pro_code.focus();
		return false;
	}

	/*if (document.search_main1.city_zip.value != "" )
	{
		return true;
	}*/

	if ((document.search_main1.pro_code.value == !"" && document.search_main1.city_name.value=="") || (document.search_main1.city_name.value!="" && document.search_main1.pro_code.value=="")	)
	{
		alert("Please select province with city");
		document.search_main1.pro_code.focus();
		return false;
	}
	return true;
}