function chk_abstract()
{

	var msg="";
		
	if(document.abstract_bio_frm.abstract_title.value.length==0)
		msg+="Please enter Presentation Title\n";
		
	if(document.abstract_bio_frm.abstract_text.value.length==0)
		msg+="Please enter Abstract Text\n";
			
	if(document.abstract_bio_frm.pre_fullname.value.length==0)
		msg+="Please enter Presenter's First Name\n";
		
	if(document.abstract_bio_frm.pre_surname.value.length==0)
		msg+="Please enter Presenter's Surname\n";	
	
	if(document.abstract_bio_frm.pre_organisation.value.length==0)
		msg+="Please enter Presenter's Organisation\n";
			
	if(document.abstract_bio_frm.pre_email.value.length==0)
		msg+="Please enter Presenter's Email\n";
	else
	{
	
		if(checkmail(document.abstract_bio_frm.pre_email))	
			msg+="Please enter a valid Email\n";
	}
				
	if(document.abstract_bio_frm.pre_biography.value.length==0)
		msg+="Please enter Presenter's Biography\n";
		
	if(msg.length > 0)
	{
	
		alert(msg);
		return false;
		
	}
	else
		return true;
		
}		

function popupwindow(obj)
{
	window.open(obj, '', "scrollbars=yes");
}

//180407
/*****************************************************************************/

function login()
{
	var msg="";

  if(document.loginfrm.username.value.length==0)
	msg+="Enter Username!\n";
  if(document.loginfrm.password.value.length==0)
	msg+="Enter Password!\n";

	if(msg.length>0)
	{
		alert(msg);
		return false;
	}
	else
	{			
	//	document.loginfrm.submit();
		return true;
	}

}

/***************************************************************************/

/**************************EMAIL CHECKING***************************/
 
 function checkmail(fldname)
  {  

	//for all email fields in any forms - BOTH FOR ADMIN/USERS
    msg=false;  
	email = fldname.value;
	var len = email.length;              
	if(len<5)
		{
			//alert("Invalid Email - id")
			msg=true;
            //fldname.value="";
		}
	else
		{				
          											//len=17
	var index1 = email.indexOf('@');    			//index1=8         												  					   
	var subind = email.substring(0,index1);        //subind=
	var indlen = subind.length;					  //indlen=7 
												   //index2=14 
													//subind1=yahoo
	var index2 = email.indexOf('.');			  //indlen1=5 index3=17 subind3=com indlen2=3	
	var subind1=email.substring(indlen+1,index2);	//
	var indlen1 = subind1.length;
	var index3 = email.indexOf(' ');
	var subind3=email.substring(index2+1,len)
	var indlen2 = subind3.length;
	if((index1!= -1)&&(index2!= -1)&&(index3==-1))
	{	
		if((indlen!=0)&&(indlen1!=0)&&(indlen2!=0))
		{
//   			alert("valid Email -id");		  	 	
		} 
        else
		{
			//alert("Invalid Email - id")
			msg=true;
            //fldname.value="";
		}
	}
	else
	{
   		//alert("Invalid Email - id");
		msg=true;
        //fldname.value="";
	}		
	} // end of else if len<5
	 return msg;
  }