function emailvalidation(entered,alertbox){with(entered){apos=value.indexOf("@");dotpos=value.lastIndexOf(".");lastpos=value.length-1;if(apos<1||dotpos-apos<2||lastpos-dotpos>3||lastpos-dotpos<2){if(alertbox){alert(alertbox);}return false;}else{return true;}}}function valuevalidation(entered,min,max,alertbox,datatype){with(entered){checkvalue=parseFloat(value);if(datatype){smalldatatype=datatype.toLowerCase();if(smalldatatype.charAt(0)=="i"){checkvalue=parseInt(value);}}if((parseFloat(min)==min&&checkvalue<min)||(parseFloat(max)==max&&checkvalue>max)||value!=checkvalue){if(alertbox!=""){alert(alertbox);}return false;}else{return true;}}}function digitvalidation(entered,min,max,alertbox,datatype){with(entered){checkvalue=parseFloat(value);if(datatype){smalldatatype=datatype.toLowerCase();if(smalldatatype.charAt(0)=="i"){checkvalue=parseInt(value);if(value.indexOf(".")!=-1){checkvalue=checkvalue+1;}}}if((parseFloat(min)==min&&value.length<min)||(parseFloat(max)==max&&value.length>max)||value!=checkvalue){if(alertbox!=""){alert(alertbox);}return false;}else{return true;}}}function emptyvalidation(entered,alertbox){with(entered){if(value==null||value==""){if(alertbox!=""){alert(alertbox);}return false;}else{return true;}}}

function swap(object) {
  if (document.getElementById) {
    if(document.getElementById(object).style.visibility == 'visible'){
	  document.getElementById('login').style.visibility = 'hidden';
      document.getElementById('search').style.visibility = 'hidden';
    }else{
	  document.getElementById('login').style.visibility = 'hidden';
      document.getElementById('search').style.visibility = 'hidden';
      document.getElementById(object).style.visibility = 'visible';
    }
  }
  else if (document.layers && document.layers[object]) {
    if(document.layers[object].visibility = 'visible'){
	  document.layers['login'].visibility = 'hidden';
      document.layers['search'].visibility = 'hidden';
    }else{
	  document.layers['login'].visibility = 'hidden';
      document.layers['search'].visibility = 'hidden';
      document.layers[object].visibility = 'visible';
    }
  }
  else if (document.all) {
    if(document.all[object].style.visibility == 'visible'){
      document.all['login'].style.visibility = 'hidden';
	  document.all['search'].style.visibility = 'hidden';
    }else{
	  document.all['login'].style.visibility = 'hidden';
	  document.all['search'].style.visibility = 'hidden';
      document.all[object].style.visibility = 'visible';
    }
  }
}