function valid()
  {
    
	emailresult = trim(document.artfrm.author_email.value);
	if(emailresult!=""){
	document.artfrm.author_email.value=emailresult;
	}
	
	titleresult = trim(document.artfrm.article_name.value);
	if(titleresult!=""){
	document.artfrm.article_name.value=titleresult;
	}
	
	authorresult = trim(document.artfrm.author_name.value);
	if(authorresult!=""){
	document.artfrm.author_name.value=authorresult;
	}
	
	descrptionresult = trim(document.artfrm.article_description.value);
	if(descrptionresult!=""){
	document.artfrm.article_description.value=descrptionresult;
	}
	
	
	 if(document.artfrm.author_email.value=="")
	 {
	    alert('Enter the email-id!!!');
        document.artfrm.author_email.focus();
		return false;
	 }else if(echeck(document.artfrm.author_email.value)==false){
		document.artfrm.author_email.value="";
		document.artfrm.author_email.focus();
		return false;
	} else if(document.artfrm.article_name.value=="")
	 {
	    alert('Enter the article title!!!');
		document.artfrm.article_name.focus();
		return false;
	 } else if(document.artfrm.author_name.value=="")
	 {
	    alert('Enter the author name!!!');
        document.artfrm.author_name.focus();
		return false;
	 }
	 else if(document.artfrm.article_description.value=="")
	 {
	    alert('Enter the description:!!!');
        document.artfrm.article_description.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
		 }

 						
	}
	
	
function trim(inputString) {
   // Removes leading and trailing spaces from the passed string. Also removes
   // consecutive spaces and replaces it with one space. If something besides
   // a string is passed in (null, custom object, etc.) then return the input.
   if (typeof inputString != "string") { return inputString; }
   var retValue = inputString;
   var ch = retValue.substring(0, 1);
   while (ch == " ") { // Check for spaces at the beginning of the string
      retValue = retValue.substring(1, retValue.length);
      ch = retValue.substring(0, 1);
   }
   ch = retValue.substring(retValue.length-1, retValue.length);
   while (ch == " ") { // Check for spaces at the end of the string
      retValue = retValue.substring(0, retValue.length-1);
      ch = retValue.substring(retValue.length-1, retValue.length);
   }
   while (retValue.indexOf("  ") != -1) { // Note that there are two spaces in the string - look for multiple spaces within the string
      retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length); // Again, there are two spaces in each of the strings
   }
   return retValue; // Return the trimmed string back to the user
} // Ends the "trim" function