function home()
{
	img1.src="images/techno_home_col.jpg";
}
function home1()
{
	img1.src="images/techno_home.jpg";
}

function about()
{
	img2.src="images/techno_about_col.jpg";
}
function about1()
{
	img2.src="images/techno_about.jpg";
}

function products()
{
	img3.src="images/techno_products_col.jpg";
}
function products1()
{
	img3.src="images/techno_products.jpg";
}

function contact()
{
	img4.src="images/techno_contact_col.jpg";
}
function contact1()
{
	img4.src="images/techno_contact.jpg";
}

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];}
}



function chk(){
if(document.form.Name.value=="")
{
alert("Enter your Name");
document.form.Name.focus();
return false;
}
if(document.form.Org.value=="")
{
alert("Enter your Company Name");
document.form.Org.focus();
return false;
}
if(document.form.Addr.value=="")
{
alert("Enter your Address");
document.form.Addr.focus();
return false;
}
if(document.form.Phone.value=="")
{
alert("Enter your Phone No");
document.form.Phone.focus();
return false;
}


if (document.form.Phone.value.length!="")
	{
	   var cOK = "0123456789";
	   var cStr = document.form.Phone.value;
	   var ad = true;
	   for (i = 0;  i < cStr.length;  i++)
	      {
		  ch = cStr.charAt(i);
		  for (j = 0;  j < cOK.length;  j++)
		     if (ch == cOK.charAt(j))
			break;
		     if (j == cOK.length)
			{
			  ad = false;
			  break;
			}
	       }
	    if (!ad)
	       {
		  alert("Please enter only digits in the phone no field");
                  document.form.Phone.focus();
		   return (false);
	        }
	 } 		



if (document.form.Fax.value.length!="")
	{
	   var cOK1 = "0123456789";
	   var cStr1 = document.form.Fax.value;
	   var ad1 = true;
	   for (i = 0;  i < cStr1.length;  i++)
	      {
		  ch1 = cStr1.charAt(i);
		  for (j = 0;  j < cOK.length;  j++)
		     if (ch1 == cOK1.charAt(j))
			break;
		     if (j == cOK1.length)
			{
			  ad1 = false;
			  break;
			}
	       }
	    if (!ad1)
	       {
		  alert("Please enter only digits in the fax no field");
                  document.form.Fax.focus();
		   return (false);
	        }
	 }


if (document.form.Mobile.value.length!="")
	{
	   var cOK1 = "0123456789";
	   var cStr1 = document.form.Mobile.value;
	   var ad1 = true;
	   for (i = 0;  i < cStr1.length;  i++)
	      {
		  ch1 = cStr1.charAt(i);
		  for (j = 0;  j < cOK.length;  j++)
		     if (ch1 == cOK1.charAt(j))
			break;
		     if (j == cOK1.length)
			{
			  ad1 = false;
			  break;
			}
	       }
	    if (!ad1)
	       {
		  alert("Please enter only digits in the mobile no field");
                  document.form.Mobile.focus();
		   return (false);
	        }
	 }








if(document.form.Mail.value=="")
{
alert("Enter your Email id");
document.form.Mail.focus();
return false;
}
if(document.form.Mail.value!="")
{
at=document.form.Mail.value.indexOf('@',0)
if(at==-1){
alert("Not a valid Email id");
document.form.Mail.focus();
return false;
}
}
if(document.form.Mail.value!="")
{
dot=document.form.Mail.value.indexOf('.',0)
if(dot==-1){
alert("Not a valid Email id");
document.form.Mail.focus();
return false;
}
}

if(document.form.Feed.value=="")
{
alert("Enter your Feedback");
document.form.Feed.focus();
return false;
}

}