var isDOM = (document.getElementById ? true : false); 
	var isIE4 = ((document.all && !isDOM) ? true : false);
	var isNS4 = (document.layers ? true : false);
	var isNS = navigator.appName == "Netscape";

	function getRef(id) {
		if (isDOM) return document.getElementById(id);
		if (isIE4) return document.all[id];
		if (isNS4) return document.layers[id];
	}

	function getSty(id) {
		x = getRef(id);
		return (isNS4 ? getRef(id) : getRef(id).style);
	}

	function moveRightEdge() {
		var yMenuFrom, yMenuTo, yOffset, timeoutNextCheck;

		if (isNS4) {
			yMenuFrom   = btn_top.top;    
			yMenuTo     = windows.pageYOffset + 600;   
		} else if (isDOM) {
			yMenuFrom   = parseInt (btn_top.style.top, 10);
			yMenuTo     = (isNS ? window.pageYOffset : document.body.scrollTop) + 600; 
		}
		timeoutNextCheck = 500;

		if (yMenuFrom != yMenuTo) {
			yOffset = Math.ceil(Math.abs(yMenuTo - yMenuFrom) / 20);
			if (yMenuTo < yMenuFrom)
				yOffset = -yOffset;
			if (isNS4)
				btn_top.top += yOffset;
			else if (isDOM)
				btn_top.style.top = parseInt (btn_top.style.top, 10) + yOffset;
				timeoutNextCheck = 10;
		}
		setTimeout ("moveRightEdge()", timeoutNextCheck);
	}
	
	
	
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}




function CheckEmail(text1){
	var chstr = text1;	
	var chname = chstr.substring(0, chstr.indexOf("@"));
	var chhost = chstr.substring(chstr.indexOf("@")+1, chstr.length);

	if((chstr.length <= 0)||(chname.length<=0)||(chhost.length<=0))
	  return false;
	  
	if((chstr.indexOf("@") < 0)||(chstr.indexOf(".") < 0)||(chstr.indexOf("@@") >= 0) || (chstr.indexOf("@.") >= 0))
	  return false ;
	
	if((chname.substring(0,1) == ".") || (chname.substring(chname.length-1, chname.length) == ".") ||(chhost.substring(0,1) == ".") || (chhost.substring(chhost.length-1, chhost.length) == "."))
	  return(false);
	
	for(var i=1 ; i<=chhost.length ; i++){
		if ((!((chhost.substring(i-1,i) >= "0") && (chhost.substring(i-1,i) <= "9")))
		&& (!((chhost.substring(i-1,i) > "@") && (chhost.substring(i-1,i) <= "Z"))) 
		&& (!((chhost.substring(i-1,i) >= "a") && (chhost.substring(i-1,i) <= "z")))
		&& (chhost.substring(i-1,i) != "-") &&(chhost.substring(i-1,i) != "."))
		 {  //alert(chhost.substring(i-1,i));
		   return false;}					
	}
	
	for(var i=1 ; i<=chname.length ; i++){
		if ((!((chname.substring(i-1,i) >= "0") && (chname.substring(i-1,i) <= "9")))
		&& (!((chname.substring(i-1,i) > "@") && (chname.substring(i-1,i) <= "Z"))) 
		&& (!((chname.substring(i-1,i) >= "a") && (chname.substring(i-1,i) <= "z")))
		&& (chname.substring(i-1,i) != "-")&&(chname.substring(i-1,i) != "_")&&(chname.substring(i-1,i) != "."))
		{ //alert(chname.substring(i-1,i));
		   return false;}
	}
	
        return true;
}