var ns4 = (document.layers)
var msie = ((navigator.appName.indexOf("Microsoft") >= 0) && (navigator.appVersion.indexOf("Win") >= 0))
var ie = (navigator.appName.indexOf("Microsoft") >= 0)
var ns6 = ((navigator.appName.indexOf("Netscape") >= 0) && (parseInt(navigator.appVersion) >= 5))
var mac = (navigator.appVersion.indexOf("Mac") >= 0)
var msMac = ((navigator.appName.indexOf("Microsoft") >= 0) && (navigator.appVersion.indexOf("Mac") >= 0))
var ns408 = ((navigator.appName.indexOf("Netscape") >= 0) &&(navigator.appVersion.substring(0,4) == "4.08"))
////////////////////////////////////////////////////////////////////////////////////////////////////////


	


//////////////////////////////////////////////Form validation/////////////////////////////////////////

function checkForm(form)
 {
 		var errors = "The form you submitted is incomplete.\n"
		
		 if (ie)
		  {
			 
				if (f1.first_name.value == "")
				 {
				   errors += "Please enter your first name.\n"
				 } 
				if (f1.last_name.value == "") 
				{
				   errors += "Please enter your last name.\n"
				} 
				if (f1.email.value == "") 
				{
				   errors += "Please enter your e-mail address.\n"
				} 

				if ((f1.first_name.value == "") || (f1.last_name.value == "") || (f1.email.value == ""))
				{
				   alert(errors)
				   return false
				}
				
 			}
			
	 		else if (ns4) 
			{
				
			    if (document.layers.main.document.f1.first_name.value == "")
				{
				   errors += "Please enter your first name.\n"
				} 
				if (document.layers.main.document.f1.last_name.value == "") 
				{
				   errors += "Please enter your last name.\n"
				}
				if (document.layers.main.document.f1.email.value == "") 
				{
				   errors += "Please enter your e-mail address.\n"
				} 

				if ((document.layers.main.document.f1.first_name.value == "") || (document.layers.main.document.f1.last_name.value == "") || (document.layers.main.document.f1.email.value == "")) 
				{
				   alert(errors)
				   return false
				} 
							   
 			} 
			
 			else if (ns6) 
			{
				
			 	if (document.forms[0].first_name.value == "")
				{
				   errors += "Please enter your first name.\n"
				} 
				if (document.forms[0].last_name.value == "") 
				{
				   errors += "Please enter your last name.\n"
				} 
				if (document.forms[0].email.value == "") 
				{
				   errors += "Please enter your e-mail address.\n"
				} 

				if ((document.forms[0].first_name.value == "") || (document.forms[0].last_name.value == "") || (document.forms[0].email.value == "")) 
				{
				   alert(errors)
				   return false
				} 		
			 }
			 
	return true //false
}
	
	



//////////////////////////////////////////////Email validation////////////////////////////////////////

	
function checkEmail() 
{
		var re = /\b\w+[@]{1}\w+[.]{1}\w+\b/
		if (ie) 	  {var myEmail = f1.email.value } 
		else if (ns4) {var myEmail = document.layers.main.document.f1.email.value} 
		else if (ns6) {var myEmail = document.forms[0].email.value}
		
		if (re.test(myEmail) != 1) 
		{
			alert("The e-mail address you provided contains formatting errors. E-mail addresses should follow this format: joe@address.com")
			if (ie) 
			{
				f1.email.focus()
			} 
			else if (ns4) 
			{
				document.layers.main.document.f1.email.focus()
			} 
			else if (ns6) 
			{
				document.forms[0].email.focus()
			}
		}
		else 
		{  
			
		}
}






///////////////////////////////////////////////////////                    //////////////////////////////////////////////


function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}