function getCSSRule(ruleName,deleteFlag){ruleName=ruleName.toLowerCase();if(document.styleSheets){for(var i=0;i<document.styleSheets.length;i++){var styleSheet=document.styleSheets[i];var ii=0;var cssRule=false;do{if(styleSheet.cssRules){cssRule=styleSheet.cssRules[ii];}else{cssRule=styleSheet.rules[ii];}
if(cssRule){if(cssRule.selectorText.toLowerCase()==ruleName){if(deleteFlag=='delete'){if(styleSheet.cssRules){styleSheet.deleteRule(ii);}else{styleSheet.removeRule(ii);}
return true;}else{return cssRule;}}}
ii++;}while(cssRule)}}
return false;}
function killCSSRule(ruleName){return getCSSRule(ruleName,'delete');}
function addCSSRule(ruleName){if(document.styleSheets){if(!getCSSRule(ruleName)){if(document.styleSheets[0].addRule){document.styleSheets[0].addRule(ruleName,null,0);}else{document.styleSheets[0].insertRule(ruleName+' { }',0);}}}
return getCSSRule(ruleName);}