function set()
{
   var name1=document.getElementById("name").value;
   if(name1=="" || name1==null)
     {
         alert("Name Must not be Blank");
         document.getElementById("name").focus();
         return false;
      }

   var address1=document.getElementById("address").value;
      if(address1=="" || address1==null)
	    {
		   alert("Please enter your Address");
		   document.getElementById("address").focus();
		   return false;

         }

   var comname1=document.getElementById("comname").value;
      if(comname1=="" || comname1==null)
	    {
		   alert("Please enter your Company Name");
		   document.getElementById("comname").focus();
		   return false;

         }

   var prod1=document.getElementById("prod").value;
      if(prod1=="" || prod1==null)
	    {
		   alert("Please enter your Product Name");
		   document.getElementById("prod").focus();
		   return false;

         }

   /*var web1=document.getElementById("web").value;
      if(web1=="" || web1==null)
	    {
		   alert("Please enter your Website Name");
		   document.getElementById("web").focus();
		   return false;
         }*/

   var tel1=document.getElementById("tele").value;
   //if(tel1=="" || tel1==null)
   if(isNaN(tel1) || tel1=="" )
     {
         alert("Please Enter the Numerical value");
         document.getElementById("tele").focus();
         return false;
      }


	   var mob1=document.getElementById("mob").value;
    if(isNaN(mob1) || mob1=="" )
     {
         alert("Please Enter the Numerical value");
         document.getElementById("mob").focus();
         return false;
      }
   
   function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Invalid E-mail ID")
		   return false;
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail ID")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail ID")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

 		 return true					
	}

    var emailID=document.dataform.email;
	
	if ((emailID.value==null)||(emailID.value==""))
	{
		alert("Please Enter your Email ID");
		emailID.focus();
		return false;
	}
	if (echeck(emailID.value)==false)
	{
		emailID.value="";
		emailID.focus();
		return false;
	}
	return true;

	
 }