var xmlHttp;
var theItem;
var my_link_sub = new Array();
my_link_sub[0] = "our_company_sub";
my_link_sub[1] = "equipment_sub";
my_link_sub[2] = "industry_sub";

function tester()
{
	alert("Script Running");
}

function transmit(str)
{
	var url;
	xmlHttp = GetXmlHttpObject();
	if(xmlHttp==null)
	{
		alert("Browser doesn't support HTTP");
	}
	else
	{
		if(str.length == 0)
		{
			document.getElementById("screen").innerHTML="";
		}	
		else
		{		
			url = str;
			//alert(url);
			theItem = "screen";
			xmlHttp.onreadystatechange=stateChanged;
			xmlHttp.open("GET", url, true);
			xmlHttp.send(null);
		}
	}
}

function transmit_wpointer(str, elem)
{
	var url;
	xmlHttp = GetXmlHttpObject();
	if(xmlHttp==null)
	{
		alert("Browser doesn't support HTTP");
	}
	else
	{
		if(str.length == 0)
		{
			document.getElementById(elem).innerHTML="";
		}	
		url = str;
		//alert(url);
		theItem = elem;
		xmlHttp.onreadystatechange=stateChanged;
		xmlHttp.open("GET", url, true);
		xmlHttp.send(null);
	}
}

function GetXmlHttpObject()
{
	//alert('In GetXmlHttpObject()');
	var tmpObject=null;
	if (window.XMLHttpRequest)
	{
		tmpObject=new XMLHttpRequest();
	}
	else if (window.ActiveXObject)
	{
		tmpObject = new ActiveXObject("Microsoft.XMLHTTP");
	}
	return tmpObject;
}

function stateChanged()
{
	//alert("In stateChanged");
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		//alert(theItem);
		document.getElementById(theItem).innerHTML=xmlHttp.responseText;
	}
}

function transmit_sub(str, category)
{
	var url;
	xmlHttp = GetXmlHttpObject();
	//alert("transmit_sub");
	if(xmlHttp==null)
	{
		alert("Browser doesn't support HTTP");
	}
	else
	{
		if(str.length == 0)
		{
			return 1;
		}	
		else
		{		
			url = str;
			//alert(my_link_sub.length);
			
			if(theItem == category)
			{
				document.getElementById(theItem).innerHTML="";
				theItem = "";
				return 0;
			}
			
			for(i = 0; i < my_link_sub.length; ++i)
			{
				if(my_link_sub[i] == category)
				{
					//alert(my_link_sub[i]);
					theItem = my_link_sub[i];
				}
			}
			
			for(i = 0; i < my_link_sub.length; ++i)
			{
				if(my_link_sub[i] != category)
				{
					document.getElementById(my_link_sub[i]).innerHTML="";
				}
			}
			
			xmlHttp.onreadystatechange=stateChanged;
			xmlHttp.open("GET", url, true);
			xmlHttp.send(null);
		}
	}
}


function testForAlpha(s)
{
	for(var i = 0; i < s.length; ++i)
	{
		if((s.charCodeAt(i) < 65 || s.charCodeAt(i) > 90) && (s.charCodeAt(i) < 97 || s.charCodeAt(i) > 122))
		{
			//alert(plate_number.charAt(i));
			return 0;
		}
	}
	return 1;
}

function textForNumeric(s)
{
	for(var i = 0; i < s.length; ++i)
	{
		if((s.charCodeAt(i) < 48 || s.charCodeAt(i) > 57))
		{
			//alert(plate_number.charAt(i)); 
			return 0; 
		}
	}				
	return 1;
}