var errormsg="";

function checkEmail(email,name)

{

   var at1      =  email.indexOf("@");

   var at2      =  email.lastIndexOf("@");

   var dot     =  email.lastIndexOf(".");

   var space   =  email.indexOf(" ");

   if((at1!=-1)&&

      (at1!=0)&&

      (at2==at1)&&

      (dot!=-1)&&

      (dot>at1+1)&&

      (dot<email.length-1)&&

      (space==-1))

   {

      return true;

   }

   else

   {

      errormsg=errormsg+"- "+name+"\n";

      return false;

   }

}

function checkDate(dd,mm,yyyy,name)

{

   result=true;

   if(!isNaN(yyyy)&&(yyyy!="")&&(yyyy<10000))

   {

      if( (mm=="02") && ((dd=="30")||(dd=="31")) )

         result=false;

      if( (mm=="02") && (dd=="29") && (yyyy%4>0) )

         result=false;

      if( ((mm=="04")||(mm=="06")||(mm=="09")||(mm=="11")) && (dd=="31") )

         result=false;

   }

   else

   {

      result=false;

   }

   if(result==false)

      errormsg=errormsg+"- "+name+"\n"

   return result;

}

function checkInterval(dstart,mstart,ystart,names,dend,mend,yend,namee)

{

   var re=true;

   re=checkDate(dstart,mstart,ystart,names)&&checkDate(dend,mend,yend,namee);

   if(re)

   {

      var yyyy=yend-ystart;

      if(yyyy>0)

	 		re=true;

      else if(yyyy==0)

      {

         var mm=mend-mstart;

         if(mm>0)

            re=true;

         else if(mm==0)

         {

            var dd=dend-dstart;

	    	if(dd>=0)

	       	re=true;

         else

            re=false;

         }

         else

	    		re=false;

      }

      else

         re=false;

   }

   if(re==false)

      errormsg=errormsg+"- Illegal interval time\n";



   return re;

}

function checkTextField(str,name)

{

	if(str=="")

	{

		errormsg=errormsg+"- "+name+"\n";

		return false;

	}

	else

		return true;

}



function checkPassword(p,namep,rp,namerp)

{

	if(p!=="")

	{

		if(p==rp)

	 		return true;

	 	else

		{

			errormsg=errormsg+"- "+namerp+"\n";

			return false;

		}

	}

	else

	{

		errormsg=errormsg+"- "+namep+"\n";

		return false;

	}



}



function checkIsIntNum(val,name)

{

	if((val!="")&&(!isNaN(val)) && val.indexOf(".")<0)

		return true;

	else

	{

		errormsg=errormsg+"- "+name+"\n";

		return false;

	}

}



function checkChoice(val,name)

{

	if(val=="")

		errormsg=errormsg+"- "+name+"\n";

}



function checkIsNum(val,name)

{

	if((val!="")&&(!isNaN(val)))

		return true;

	else

	{

		errormsg=errormsg+"- "+name+"\n";

	}



}



function checkAll()

{

	if(errormsg!="")

	{

		alert(errormsg);		

		errormsg="";

		return false;

	}

	else

		return true;

	errormsg="";

}

function setCheckboxes(the_form, the_box, do_check)

{

    var elts      = (typeof(document.forms[the_form].elements[the_box]) != 'undefined')

                  ? document.forms[the_form].elements[the_box]

                  : document.forms[the_form].elements[the_box];

    var elts_cnt  = (typeof(elts.length) != 'undefined')

                  ? elts.length

                  : 0;



    if (elts_cnt) {

        for (var i = 0; i < elts_cnt; i++) {

            elts[i].checked = do_check;

        }

    } else {

        elts.checked        = do_check;

    }

    return true;

}



function checkCheckboxes(the_form, the_box)

{

   var elts      = (typeof(document.forms[the_form].elements[the_box]) != 'undefined')

                  ? document.forms[the_form].elements[the_box]

                  : document.forms[the_form].elements[the_box];

   var elts_cnt  = (typeof(elts.length) != 'undefined')

                  ? elts.length

                  : 0;

	err=false;



	if (elts_cnt)

   {

		for (var i = 0; i < elts_cnt; i++)

		{

			if(elts[i].checked == true)

			{

				err=true;

				break;

			}

		}



	}

	else if(document.forms[the_form].elements[the_box].checked==true)

	{

		err=true;

	}



	return err;

}



function checkSelections(the_form, the_box)

{

   var elts      = (typeof(document.forms[the_form].elements[the_box]) != 'undefined')

                  ? document.forms[the_form].elements[the_box]

                  : document.forms[the_form].elements[the_box];

   var elts_cnt  = (typeof(elts.length) != 'undefined')

                  ? elts.length

                  : 0;

	err=false;



	if (elts_cnt)

   {

		for (var i = 0; i < elts_cnt; i++)

		{

			if(elts[i].selected == true)

			{

				err=true;

				break;

			}

		}



	}

	else if(document.forms[the_form].elements[the_box].selected==true)

	{

		err=true;

	}



	return err;

}



function checkZeroValue(the_form,the_box)

{



	var elts      = (typeof(document.forms[the_form].elements[the_box]) != 'undefined')

	                  ? document.forms[the_form].elements[the_box]

	                  : document.forms[the_form].elements[the_box];

	var elts_cnt  = (typeof(elts.length) != 'undefined')

						? elts.length

						: 0;

	err=false;



	if (elts_cnt)

	{

		for (var i = 0; i < elts_cnt; i++)

		{

			if(elts[i].value == "")

				elts[i].value = "0";

			if(elts[i].value != "0")

			{

				err=true;

				break;

			}

		}

	}

	else if(document.forms[the_form].elements[the_box].value!="")

	{

		err=true;

	}

	return err;

}