function OpenNewWindow(imageurl){
var Imagepage = imageurl;var windowheight = 480;var windowwidth = 640;
var windowleft = (screen.width - parseInt(windowwidth)) / 2;
var windowtop = (screen.height - parseInt(windowheight)) / 2;
var windowname = "PopupWindow";
windowproperties = 'resizable=no,status=no,toolbar=no,height='+windowheight+',width='+windowwidth+',top='+windowtop+',left='+windowleft+',scrollbars=yes'
setwindow = window.open(Imagepage, windowname, windowproperties)
	if (CheckNavigatorVersion()==true){
			setwindow.window.focus();}
}  


function CheckNavigatorVersion()
{
	if (parseInt(navigator.appVersion) >= 4)
		{
			return true;
		}
    	return false;

}

function MustEnter(obj, field)
{
	//if (  isObject(obj)  )
	{
		if (obj.value == "") 
		{
			alert("Please enter " + field);
			obj.focus();
			obj.select();
			return false;
		}
	}
	return true;
}

function MustEnterInt(obj, field)
{
//	if (  isObject(obj)  )
	{
		if ( MustEnter(obj, field) )
		{
			if (isNaN(obj.value) )
			{
				alert("Please enter a valid integer for " + field);
				obj.focus();
				obj.select();
				return false;
			}
		}	
		return true;
	}
	
	return false;
}

function validateEmail(field, fieldName){
	var str
	str = field.value;
		
	var reg1 = /(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)|(^\s)/;
	var reg2 = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$/; 
	  
	if (!reg1.test(str) && reg2.test(str)) { 
     return true;
	}

	return false;
}