// JavaScript Document

// constant top navigation image roll overs
function roll_over(img_name, img_src) {
   document[img_name].src = img_src;
}

// contact page form validator
function formValidator()
{
	var fname = document.getElementById('txtfname');
	var lname = document.getElementById('txtlname');
	var email = document.getElementById('txtemail');
	var company = document.getElementById('txtcompany');
	var radiomedia = document.getElementById('radiomedia');
	var enquiry = document.getElementById('txtenquiry');
	if(isempty(fname, 'Please Enter Your First Name'))
	{
		if(isempty(lname, 'Please Enter Your Last Name'))
		{
			if(isEmail(email, 'Please Enter Valid Email Address'))
			{
				if(isempty(company, 'Please Enter Your Organisation'))
				{
					if(checkradio(radiomedia, 'Please Select the Relevant Department'))
					{
						if(isempty(enquiry, 'Please Enter Your Enquiry'))
						{
							return true;
						}
					}
				}
			}
		}
	}
	return false;
} 
function isEmail(elem, message)
{
	var emailCnt = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
	if(elem.value.match(emailCnt)){
		return true;
	}else{
		alert(message);
		elem.focus();
		return false;
	}
}
function isempty(elem, message)
{
	if(elem.value.length == 0)
	{
		alert(message);
		elem.focus();
		return false;
	}else
	{
		return true;
	}
}

function checkradio(elem,message)
{

	var flag=false;
	for (i = 0; i < document.contactForm.radiomedia.length; i++)
	{
		if (document.contactForm.radiomedia[i].checked)
		{
			
			//if(document.contactForm.radiomedia[i].value=="Others")
//			{
//				if(document.getElementById('CategoryOthers').value.length==0)
//				{
//					document.getElementById('user_register').innerText='Please Enter Other Category';
//					document.getElementById('user_register').textContent='Please Enter Other Category';
//					return false;
//				}
//			}
			flag = true; 
		}
	}
	if (flag==false)
	{

		alert(message);
		return false;
	}
	else
	{
		return true;
	}

}

// footer pop up window

function popUpLegal() 
	{
 	window.open('../include/legalStatement.asp','terms','resizable=no,scrollbars=yes,width=550,height=575');
	}
function popUpPrivacy() 
	{ 
 	window.open('../include/privacypolicy.asp','terms','resizable=no,scrollbars=yes,width=550,height=575');
	}
function warningMsg()
{
	alert("You don't have permission to view this content");
}

function changeBannerLink(){
	var imgOn = 'btnGroupOn.gif';
	var imgOff = 'btnGroup.gif';
	if((document.group.src).slice(33,51) == imgOn || (document.group.src).slice(33,51) == imgOff){
		document.getElementById('topBanner').innerHTML = '<a href="http://www.enrc.com/output/page54.asp"><img src="../files/images/topbanner.jpg" height="80px" width="1000px" alt="ENRC" /></a>'
		document["btnPrint"].src="../files/images/btn_printpage.gif"
	}else{
		document.getElementById('topBanner').innerHTML = '<a href="http://www.enrc.com/output/page126.asp"><img src="../files/images/topbanner.jpg" height="80px" width="1000px" alt="ENRC" /></a>'
		document["btnPrint"].src="../files/images/rus_btn_printpage.gif";
	}
}
var opts=0;
var tabs=1;
function changes()
{
	if(opts==0)
	{
		document.getElementById("drop_option").style.display="block";
		opts=1;
	}
	else if(opts==1)
	{
		document.getElementById("drop_option").style.display="none";
		opts=0;
	}
}
function tabs_sh(tno)
{
	for(var j=1;j<=5;j++)
	{
		var tbs="tabs"+j;
		var tbsln="tab_lk"+j;
		if(document.getElementById(tbs))
		{
			document.getElementById(tbs).style.display="none";
		}
		if(document.getElementById(tbsln))
		{
			document.getElementById(tbsln).style.color="#888787";
			document.getElementById(tbsln).style.background="#b1b1b1";
		}
	}
	var tbs="tabs"+tno;
	var tbsln="tab_lk"+tno;
	if(document.getElementById(tbs))
	{
		document.getElementById(tbs).style.display="block";
	}
	if(document.getElementById(tbsln))
	{
		document.getElementById(tbsln).style.color="#d89e22";
		document.getElementById(tbsln).style.background="#535353";	
	}
}
window.onload=changeBannerLink;