function stringToDOM (inputString) {
	var normaliseString = function (str) {
		str = str.replace(/\r/g, " ");
		str = str.replace(/\n/g, " ");	
		return str;
	};
	var deEntity = function (str) {
		str = str.replace(/&/g, "&");
		str = str.replace(/>/g, ">");
		str = str.replace(/&lt;/g, "<");
		str = str.replace(/&nbsp;/g, " ");
		str = str.replace(/&quot;/g, '"');
		return str;
	};
	var deSpace = function (str) {
		str = str.replace(/ /g, "");
		return str;
	};
	var processTag = function (str) {
//alert(str);
		var tagreg=/[a-z0-9]+/;
		var newDOM = document.createDocumentFragment();
		var space = str.indexOf(' ');
		if (space === -1) {
			var tagName = str.toLowerCase();
			try{
			newDOM.appendChild(document.createElement(tagName));} catch (e){alert(e+"str: "+str)}
		} else {
			tagName = deSpace(str.substring(0, space)).toLowerCase();
			if (document.all && tagName === 'input') {
				newDOM.appendChild(document.createElement('<' + str + '/>'));
				return newDOM;
			}
			str = str.substring(space + 1);
			newDOM.appendChild(document.createElement(tagName));
			while (str.length > 0) {
				var equal = str.indexOf('=');
				if (equal >= 0) {
					var attributeName = deSpace(str.substring(0, equal)).toLowerCase();				
					var quote = str.indexOf('"');
					str = str.substring(quote + 1);
					quote = str.indexOf('"');
					var attributeValue = deEntity(str.substring(0, quote));
					str = str.substring(quote + 2);
					if (document.all && attributeName === 'style') {
						newDOM.lastChild.style.cssText = attributeValue;
					} else {
						newDOM.lastChild.setAttribute(attributeName, attributeValue);					
					}
				} else {
					break;
				}
			}
		}
		return newDOM;
	};
	var findEndTag = function (innerStr, str, lastTag) {
		var funcInnerStr = innerStr;
		var funcStr = str;
		lastTag = lastTag.toLowerCase();
		var nextClosingTag = funcStr.indexOf('</' + lastTag + '>');
		funcInnerStr = funcInnerStr.concat(funcStr.substring(0, nextClosingTag));
		funcStr = funcStr.substring(nextClosingTag);
		while (funcInnerStr.indexOf('<' + lastTag) != -1) {
			funcInnerStr = funcInnerStr.substring(funcInnerStr.indexOf('<' + lastTag));
			funcInnerStr = funcInnerStr.substring(funcInnerStr.indexOf('>') + 1);
			funcStr = funcStr.substring(funcStr.indexOf('>') + 1);
			nextClosingTag = funcStr.indexOf('</' + lastTag + '>');
			funcInnerStr = funcInnerStr.concat(funcStr.substring(0, nextClosingTag));
			funcStr = funcStr.substring(nextClosingTag);
		}
		return str.length - funcStr.length;
	};
	var parseString = function (str) {
		var newDOM = document.createDocumentFragment();
		while (str && str.length > 0) {
			var lowerThan = str.indexOf("<");
			if (lowerThan === -1) {
				str = deEntity(str);
				newDOM.appendChild(document.createTextNode(str));
				str = null;
			}
			if (lowerThan > 0) {
				var newTextFrag = deEntity(str.substring(0, lowerThan));
				newDOM.appendChild(document.createTextNode(newTextFrag));
				str = str.substring(lowerThan);
			}
			if (lowerThan === 0) {
				var comment = str.indexOf('<!--');
				if (comment === 0) {
					var commentEnd = str.indexOf('-->');
					var commentContent = str.substring(4, commentEnd);
					commentContent = deEntity(commentContent);			
					newDOM.appendChild(document.createComment(commentContent));
					str = str.substring(commentEnd + 3);
				} else {
					var greaterThan = str.indexOf('>');
					if (str.substring(greaterThan - 1, greaterThan) === '/') {
						var emptyTagEnd = str.indexOf('/>');
						var emptyTagContent = str.substring(1, emptyTagEnd);
						newDOM.appendChild(processTag(emptyTagContent));
						str = str.substring(emptyTagEnd + 2);						
					} else {
						var normalTagEnd = str.indexOf('>');
						var normalTagContent = str.substring(1, normalTagEnd);
						var tmpNewDOM = document.createDocumentFragment();
						tmpNewDOM.appendChild(processTag(normalTagContent));
						str = str.substring(normalTagEnd + 1);
						var innerStr = str.substring(0, str.indexOf('</'));
						str = str.substring(str.indexOf('</'));
						if (innerStr.indexOf('<') != -1) {
							if(tmpNewDOM.lastChild)var lastTag = tmpNewDOM.lastChild.nodeName;
							var posOfEndTag = findEndTag(innerStr, str, lastTag) ;
							innerStr = innerStr.concat(str.substring(0, posOfEndTag));
							str = str.substring(posOfEndTag);						
						}
						str = str.substring(str.indexOf('>') + 1);
						if(tmpNewDOM.lastChild)tmpNewDOM.lastChild.appendChild(parseString(innerStr));
						else tmpNewDOM.appendChild(parseString(innerStr));
						newDOM.appendChild(tmpNewDOM);
					}				
				}				
			}	
		}
		return newDOM;
	};
//alert(inputString);
	var newDOM = parseString(inputString);
	return newDOM;	
}
function DOMtoString (nodeObj) {
	var entify = function (str) {
		str = str.replace(/&/g, "&amp;");
		str = str.replace(/>/g, "&gt;");
		str = str.replace(/</g, "&lt;");
		str = str.replace(/\"/g, '&quot;');		
		return str;
	};
	var parseDOM = function (node) {
		var children = node.childNodes;
		var string = '';
		for (var i = 0; i < children.length; i++) {
			var whatType = children[i].nodeType;
			switch (whatType) {
				case 1:
					var tagName = children[i].nodeName.toLowerCase();
					var tagAttributes = children[i].attributes;
					string = string.concat('<' + tagName);
					if (tagAttributes.length > 0) {
						for (var ii = 0; ii < tagAttributes.length; ii++) {
							if (document.all) {
								if (tagAttributes[ii].nodeName && tagAttributes[ii].nodeValue !== null && tagAttributes[ii].nodeValue != '' && (tagAttributes[ii].nodeName != 'contentEditable' && tagAttributes[ii].nodeValue != 'inherit') && (tagAttributes[ii].nodeName != 'shape' && tagAttributes[ii].nodeValue != 'rect')) {	
									string = string.concat(' ' + tagAttributes[ii].nodeName.toLowerCase() + '="' + entify(tagAttributes[ii].nodeValue) + '"');
								}
								if (tagAttributes[ii].nodeName === 'style' && children[i].style.cssText !== null && children[i].style.cssText.length !== 0) {
									string = string.concat(' style="' + children[i].style.cssText.toLowerCase() + ';"');	
								}
							} else {
								string = string.concat(' ' + tagAttributes[ii].nodeName.toLowerCase() + '="' + entify(tagAttributes[ii].nodeValue) + '"');
							}
						}
					} 
					if (tagName === 'meta' || tagName === 'img' || tagName === 'br' || tagName === 'input' || tagName === 'link' || tagName === 'hr') {
						string = string.concat(' />');
					} else {					
						string = string.concat('>' + parseDOM(children[i]) +'</' + tagName + '>');
					}
					break;
				case 3:
					string = string.concat(entify(children[i].nodeValue));
					break;
				case 8:
					string = string.concat('<!--' + entify(children[i].nodeValue) + '-->');
					break;
			}
		}
		return string;
	};
	var xhtmlString = parseDOM(nodeObj);
	return xhtmlString;
}