var ua = navigator.userAgent;

var os_win = ( navigator.appVersion.indexOf( 'Win' ) != -1 );
var os_mac = ( navigator.appVersion.indexOf( 'Mac' ) != -1 );
var os_lin = ( ua.indexOf( 'Linux' ) != -1 );

var is_opera = ( ua.indexOf( 'Opera' ) != -1 );
var is_konq  = ( ua.indexOf( 'Konqueror' ) != -1 );
var is_saf   = ( ua.indexOf( 'Safari' ) != -1 );
var is_moz   = ( ua.indexOf( 'Gecko' ) != -1 && !is_saf && !is_konq);
var is_ie    = ( document.all && !is_opera );
var is_ie4   = ( is_ie && !document.getElementById );

// ie5x tests only for functionality
// Opera will register true in this test if set to identify as IE 5
var is_ie5x    = ( document.all && document.getElementById );
var os_ie5mac  = ( os_mac && is_ie5x );
var os_ie5xwin = ( os_win && is_ie5x );

function fixPNG(element,p)
{
	if (/MSIE (5\.5|6).+Win/.test(navigator.userAgent))	{
		var src;
    	if (element.tagName=='IMG') {
	    	if (/\.png$/.test(element.src)) {
   		    	src = element.src;
    		    element.src = "images/spacer.gif"; //заменяем изображение прозрачным gif-ом
	      	}
    	}
	    else
    	{
	    	src = element.currentStyle.backgroundImage.match(/url\("(.+\.png)"\)/i);
    	    if (src) {
        		src = src[1];
	        	element.runtimeStyle.backgroundImage="none";
    	    }
	    }
		if(p==1)
			sm = "scale";
		else
			sm = "no";
    	if (src) element.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + src + "',sizingMethod='"+sm+"')";
	}
}
function fixCell(element)
{
	if (/MSIE (5\.5|6).+Win/.test(navigator.userAgent))	{
    	if (element.tagName!='IMG') {
        	element.runtimeStyle.backgroundImage="none";
	    }
    	element.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='images/cellIE.png',sizingMethod='crop')";
	}
}
function setTextMask(objText, objMask) {
		mleft = 0; mtop = 0;
		objMask.style.width = parseInt(objText.offsetWidth)+"px";
		var obj = objText;
		while(2>1) {
			if(obj.tagName=="body") break;
			mleft = mleft + parseInt(obj.offsetLeft);
			mtop = mtop + parseInt(obj.offsetTop);
			if(obj.offsetParent!=null) {
				var obj = obj.offsetParent;
			} else {
				break;
			}
		}
		objMask.style.left = mleft+"px";
		objMask.style.top = mtop+4+"px";
		objMask.style.display = '';
}