js调用QQ对话框

<div style="display:none">

   <iframe src="tencent://message/?Menu=yes&uin=1364768105&Service=58&SigT=A7F6FEA02730C988C805AFEF68AD53BC361CCCEBB742E562CCD284EF163EF97FE9709164CDC365026753498A82CCF06A845AA33A8296FE6DE6832BF58A28FC37F4B9DC5F90D9B07862446CBE090013FCB6072784E4EF427B869FC17A8D3572E2CC597A732337A42AE9B9B6C31F7F0FE31CE267F2A020D9E2&SigU=30E5D5233A443AB202339DD8F4598FB527A1C72961145A9D264A44BC0317385EE5186879FA4F7EFCC4C6CC06E1D53C9D63107F51CCD230EB0BE7D4851F7D43D6145BCED1053440DD"></iframe>

</div>

//设置为display:none;当事件触发，帮div添加事件，display:block；